| __Name__ | __Size__ | __Date__ | __Rating__ | __Description__ |

| **(Parent Dir)** | *folder* | | **Up to TI-89 BASIC Math Programs** |

| **3formulae.zip** | 1k | 07-09-08 | | **3 Formulae** Three Famous Formulas: The Handy-Dandy Distance Formula, The Magnificent Midpoint Formula, and the Scrumptious Slope Formula. Dialog box input/output. |

| **ad.zip** | 1k | 02-03-11 | | **SFAPC: Angle drawer** Stupid Functions for A P Calculus: Draw any angle on the graph screen |

| **allgeometrynotes.zip** | 5k | 02-10-25 | | **All the Geometry Theorems and Postulates** This is a file that contains ALL the theorems and postulates for the Geometry course. Very usefull if you are the student who can't remember the slew of equations and theorems required for the couse and tests. |

| **analyticgeometry2.1pro.zip** | 306k | 05-09-04 | | **Analytic geometry 2.2 Pro** The most comprehensive analytic geometry program for TI-89 and TI-92. You can enter points, vectors, lines and planes and then solve many problems as distances, intersections, angles (variances), rotating and much more. Help with a lot of formulas is also included, so your 45 minutes exam will take only 5 :-). Current language localizations: ENG, ITA, CZ. Nice tutorial is added! |

| **apolysol.zip** | 9k | 01-12-16 | | **Apolysol** Helps people solve geometry problems easier |

| **arclength.zip** | 1k | 03-10-23 | | **Arc Length** Calculates the Arc Length of a given function (see readme) |

| **arclngth.zip** | 1k | 00-02-13 | | **Arc Length** Calculates the arc length of a vector-valued function between t=a and t=b |

| **arcsandsectors.zip** | 4k | 06-05-27 | | **Arcs and Sectors** "Arcs and Sectors" is a small, useful program for geometry students. It can find both the arc length and sector area, given a number of degrees and the radius. As an added bonus, it is written completely with dialog boxes and gives the exact and approximate answers. |

| **area3.zip** | 1k | 02-02-21 | | **Area Calculation** New Triangle area Calculation tool |

| **areacalc.zip** | 54k | 02-11-08 | | **Area Calculator** This program calculates the bounded area and location of the centroid of any shape. It is useful to anyone calculating areas/centroids of odd shapes. |

| **areacircs.zip** | 1k | 00-07-19 | | **Area of a Circular Segment** This program computes the area of a circular segment(the area between a chord and the arc it spans). |

| **areafinder.zip** | 1k | 03-11-19 | | **Area Finder 2.1 by Calcsoft Technologies** A revised edition of the previous area finder. It doesn't change the mode settings or add a new folder. |

| **areanvolumescalc.zip** | 2k | 01-12-15 | | **Area and Volumes ( Calculating Version)** Solves for the areas of 6 different polygons, the volumes of 6 different solids, the surface area of a sphere, and the lateral area of a right circular cone. |

| **areanvolumesequ.zip** | 2k | 01-12-15 | | **Area and Volumes ( Equations)** Contains equations for the areas of 6 different polygons, the volumes of 6 different solids, the surface area of a sphere, and the lateral area of a right circular cone. |

| **areanvolumes.zip** | 2k | 01-12-15 | | **Area and Volumes (Full Version)** Contains equations and also solves for the areas of 6 different polygons, the volumes of 6 different solids, the surface area of a sphere, and the lateral area of a right circular cone. |

| **areaofcircle.zip** | 1k | 03-12-08 | | **Area of Bryant's Circles** This program allows you to determine the area of a circle with much more ease than the manual alternitive. Knock yourself out. |

| **areas2.zip** | 1k | 09-04-24 | | **Areas y volumenes** [ENGLISH]Calculates areas and volumes of geometric shapes and figures differs, can employ the use of units such as _M, _cm, _ha, _M ^ 3 _l, etc.. [SPANISH] Calcula areas y volumenes de ditintas figuras y formas geometricas, puede emplear el uso de unidades tales como _m, _cm, _ha, _m^3, _l, etc. |

| **areass.zip** | 2k | 02-07-22 | | **Areas** Lots of Areas!!! |

| **areas.zip** | 1k | 99-05-31 | | **2D Area Formulas v2.0** This program is designed to help you find the area for many 2-dimensional shapes. |

| **area.zip** | 1k | 99-11-14 | | **Area of a Triangle v1.0** Displays the area of a triangle from its three coordinates and graphs the triangle. |

| **asolve.zip** | 1k | 07-04-14 | | **Angle Solve** This program makes solving sinusoidal expressions easy. |

| **bezierfr.zip** | 1k | 03-03-04 | | **Bezier (Français)** Programme qui calcule et trace les courbes de bezier a partir de points que vous lui indiquez. Pas de limites de points. Le programme trace aussi les points |

| **bicenter.zip** | 1k | 11-05-29 | | **Bicentric Quadrilateral** Compute different properties of bicentric quadrilaterals. |

| **brahmagu.zip** | 1k | 11-05-29 | | **Brahmagupta's Formula / Heron's Formula** Compute the area of a cyclic quadrilateral or cyclic triangle. |

| **bretang.zip** | 1k | 11-05-29 | | **Bretschneider's Angle Formula** Uses Bretschneider's Angle formula to find the area of a quadrilateral. |

| **bretdiag.zip** | 1k | 11-05-29 | | **Bretschneider's Diagonal Formula** Uses Bretschneider's diagonal formula to find the area of a quadrilateral. |

| **calcpi.zip** | 1k | 99-11-19 | | **Calculations for Pi** Gives 3 different examples of how to calculate PI. |

| **centraltheta.zip** | 1k | 11-05-30 | | **Central Angle** Find the area of a quadrilateral from the measure of the angle formed by the intersection of the diagonals and either its diagonal lengths or its side lengths. |

| **chordsolve.zip** | 1k | 03-03-04 | | **Absolute Chordsolve v1.00** When given any two pieces of information out of chord length, radius of circle, distance from circle to chord, and arc degree measure, this program will solve for the missing information. It will also find the length of the chord's arc. You can save any of these values to a variable. |

| **chord.zip** | 1k | 01-02-07 | | **Chord Calculator v1.2** Now automatically changes mode to degree so you don't get negative answers, etc. It changes back to whatever you had it on when it is done. |

| **circcalc.zip** | 1k | 10-10-06 | | **Circ Calc** This program calculates the circumference, diameter, radius, and area of a circle when either the circumference, diameter, radius, or area is given. |

| **circfunc.zip** | 1k | 01-04-04 | | **Circ Func** A progam that creates the Secant, Cosecant and Cotangent circle functions (also known as arc functions). |

| **circl3pt.zip** | 1k | 11-05-30 | | **Circle from Three Points** Find the equation of a circle that passes through three points. |

| **circleinfo.zip** | 1k | 12-03-29 | | **Conic Section - Circle** This program gives a variety of information about circles! Given input in standard or general form, this program will give the standard form equation, center, radius, domain, range, and produce a graph. |

| **circleprogram.zip** | 2k | 01-12-15 | | **Circle Program** Finds the area, circumference, length of an arc with central angle defined, and the area of a sector with central angle defined. |

| **circleproperties.zip** | 2k | 01-12-15 | | **Circle Properties** Definitions of basic terms dealing with the circle along with pictures, and equations for finding the area and the circumference. |

| **circlereg.zip** | 3k | 04-08-03 | | **Circle 'Regression'** Not actually a true regression. What it can do is to take either two points, three points, or two points and the length of the radius and spit out the formula for the circle (circles for 2 pts & radius). For the 2 pt program, it shows the equation for the line passing through the centers of all circles passing through those two points. Useful for geometry and pre-calc. |

| **circles.zip** | 1k | 03-11-20 | | **Circles** Converts between the general equation of a cirle, radius, and center point. |

| **circ.zip** | 1k | 99-08-26 | | **Circles** Allows you to enter a property of a circle, and it returns 5 properties of a circle, includes, radius, diameter, circumference, area, and volume. Great for geometry. |

| **cirprgm.zip** | 1k | 98-11-21 | | **Circle Formula Program** Solves for Circle Formulas |

| **clockang.zip** | 1k | 11-05-30 | | **Clock Angles** Find the angle made by the minute- and hour-hand at a certain time (HH:MM:SS). |

| **clocktheta.zip** | 1k | 11-02-01 | | **Clock Hand Angle** Find the angle between the hour hand and minute hand of a clock by inputting the hour, minute, and second. You can choose to have an approximate decimal answer or a fractional exact answer. |

| **cmpletsq.zip** | 1k | 11-05-30 | | **Complete the Square** Complete the square to find the equation of a circle. |

| **cnvhull89.zip** | 38k | 06-10-27 | | **Convex Hull Area** This program calculates the area of a 2D convex hull given a matrix of points (order is not important). |

| **conic89.zip** | 5k | 02-02-10 | | **Grand Unified Conic Program89** Hangles any conic, general or standard, rotated or not |

| **coniceh.zip** | 3k | 02-01-01 | | **ConicEH** This program calculates the foci, vertices, and center of an Ellipse or a Hyperbola, conic sections. |

| **conicid.zip** | 2k | 02-01-01 | | **ConicID** ConicID calculates the type of conic section as well as the angle of rotation for the equation. |

| **conicpar.zip** | 2k | 02-01-01 | | **Conic Parabola** Conic Parabola calculates the Vertex, Focus, and Directrix of the parabola, a conic section. |

| **conics2.zip** | 2k | 99-11-10 | | **Conics Solver v3.5** Conic section solver and grapher |

| **conicssuite.zip** | 1k | 02-10-26 | | **Ti-89 Conics Suite** This all-encompassing Conics Suite calculates Standard Form, the type of Conic, essential information about the graph (length of latus recturm, foci, vertices, length of major and minor axis, equation for asymptotes and directrixes). A must have for anyone in Algebra 2 or Precalculus. Easy to Use. |

| **conics.zip** | 3k | 99-04-05 | | **Conic Section Programs** |

| **conic.zip** | 4k | 05-09-27 | | **CONICS** This is the ULTIMATE CONICS PROGRAM! It does everything from finding the radius of a cicle to finding the eccentricity of a hyperbola. A must-have if you are having trouble with conics (or if you are just tired of them). |

| **convert.zip** | 1k | 03-10-23 | | **Function Converter** Converts a 3-d function from either rectangular, Cylindrical, or Spherical form to each of the other to forms (see readme for details and an example) |

| **coordply.zip** | 1k | 11-05-30 | | **Coordinates of a Regular Polygon** Get the coordinates of a regular polygon with a given length centered around the origin. |

| **coor.zip** | 1k | 09-09-06 | | **Linear Line Information** input 2 points as parameters coor(x1,y1,x2,y2) and find out the slope, midpoint, distance, y- and x- intercepts of the line |

| **curve3d.zip** | 6k | 04-01-02 | | **Space Curves 89** This program adds new functionality to your TI-89: the ability to draw 3d space curves! This program is very useful for 3dimensional projectile motion, and any other applications that may use 3d graphing of curves. Also, a MUST HAVE for Calc III. |

| **cvpolyg.zip** | 40k | 06-10-27 | | **Polygon Analysis** Calculates area, perimeter and centre of gravity of a polygon given vertexes in whatever their order may be. In case of one or more points inside the polygon the program calculates also the barycentre of all the points. |

| **cycldiag.zip** | 1k | 11-06-01 | | **Cyclic Quadrilateral Diagonal Lengths** Get the lengths of the diagonals in a cyclic quadrilateral, given the side lengths. |

| **diagcirc.zip** | 19k | 05-11-29 | | **DiagCirc** creer un diagrame circulaire create a circular graph |

| **diagonal.zip** | 3k | 06-05-27 | | **Diagonal** "Diagonal" is a very simple program written entirely in dialog boxes for the sole purpose of finding the number of diagonals in a regular, convex polygon. |

| **diag.zip** | 1k | 99-11-19 | | **Diagonal Finder v1.0a** Diagonal Finder finds the amount of diagonals in any polygon. |

| **dist2.zip** | 1k | 17-09-14 | | **distance2d** A basic solver for 2d distance in Cartesian space I wrote while bored in geometry class. |

| **dist.89p** | 1k | 01-12-16 | | **Distance Formula** |

| **distance2.zip** | 1k | 99-03-08 | | **Equation to Point Distance** Finds distance between: equation to equation, point to point, equation to point |

| **distance3.zip** | 1k | 00-10-01 | | **Distance Formula** This is the distance formula. It finds the distance between two points. It is very useful in geometry class. |

| **distance5.zip** | 1k | 03-09-19 | | **Distance Formula** this will find the distance of two points |

| **distanceform.zip** | 1k | 04-09-23 | | **DISTANCE FORMULA, plus extras!** Type in two coordinates, and you get the distance, slope, y-intercept, and the midpoint. Pretty impressive, eh? (Was part of mw.zip.) |

| **distancetwopoints.zip** | 1k | 11-06-01 | | **Distance Formula** Get the distance between two points. |

| **distance.zip** | 1k | 98-11-04 | | **Distance 89** A program to find the distance between two points. |

| **distanc.zip** | 1k | 03-11-22 | | **Distance** Finds the distance between two points on a coordinante plane. |

| **distmid.zip** | 3k | 01-04-04 | | **2D/3D Distance and Midpoint Calculator** A nice program for calculating 2D and 3D distances and midpoints. Gives answers in exact and approx form and cleans up after itself by deleting any variables it uses. |

| **dist.zip** | 1k | 99-11-19 | | **Distance** It finds the distance between two points using the [square root of (x2-x1)^2 + (y1-y2)^2] formula. It saves alot of time. |

| **dobledistanciameridiana.zip** | 219k | 09-06-07 | | **Doble Distancia Meridiana®** Gracias por descargar Doble Distancia Meridiana® Realiza el calculo de area, perimetro y precision de una poligonal cerrada. Incluye visualizacion de la poligonal. Thank you for download Doble Meridian Distance® The program calculates area, perimeter and precision of a closed polygon. Besides it shows the polygon visualization. |

| **drawpoly.zip** | 1k | 11-06-01 | | **Draw a Regular Polygon** Draw a regular polygon on the graph screen. |

| **ellipsegraph.zip** | 1k | 12-03-29 | | **Ellipse Graph** Generates the graph of an ellipse in either General (ax^2+by^2+cx+dy+e=0) or Standard ((x-h)^2/a^2+(y-k)^2/b^2=1) form. |

| **ellipseinfo.zip** | 1k | 12-03-29 | | **Conic Section - Ellipse** Given the equation of an ellipse in either General or Standard form, this program gives the standard form equation, center, a value, end points of major axis, b value, end points of minor axis, focal distance, foci, end points of focal chords, eccentricity, minor axis length, major axis length, domain, range, and graph. |

| **ellipse.zip** | 1k | 09-10-30 | | **Ellipse- find e & c** enter with the parameters (a,b) where a and b are semimajor and semiminor axis values, and find the eccentricity and the length from center to focus |

| **eqpack.zip** | 2k | 99-09-11 | | **Brandon's Top Ten Geometry Programs v0.95 Beta** |

| **findarea.zip** | 1k | 10-11-15 | | **Find Area** Find the area of triangles, trapezoids, circles, and ellipses. |

| **findsurfarea.zip** | 1k | 10-11-17 | | **Find Surface Area** Find the surface area of spheres, cylinders, and cones. |

| **findvolume.zip** | 1k | 10-11-15 | | **Find Volume** Find the volume of prisms, pyramids, cones, and spheres. |

| **funcs.zip** | 3k | 02-02-10 | | **Math Functions** These are some math functions I made to help you with geometry. |

| **function_gd.zip** | 1k | 06-09-26 | | **Functions: Gudermannian Function** This function computes the inverse things of the mercator projection. Useful for geography. |

| **g89form.zip** | 11k | 00-11-07 | | **Geometry 89 PLUS** version 3.0 of My formulas for the 89. . Next version will include a sneek peek into other upcoming programs like Advanced Algebra 89 PLUS, The Dead Army, and James Bond 007 |

| **gena.zip** | 1k | 11-06-02 | | **Gergonne-Nagel** Obtain the distance between the Gergonne Point and the Nagel Point in a triangle. |

| **geo2.zip** | 4k | 01-02-20 | | **Geometry 89** Excellent geometry program for the TI-89. Includes Pythagorean theory, slope-intercept form, function form from an equation or two points, area, volume, and other stuff. The best? |

| **geo89.zip** | 63k | 02-09-30 | | **Geo 89 v1.20** Upgrade of the file Geo2, could not get hold of the original author. I added a WHOLE bunch of stuff. Download and read the word file with snapshots. He proclaims the best? After I edited it :) NOTE: This is beta, Hey!, you get to have your name in it. |

| **geoboard.zip** | 1k | 99-07-09 | | **Geoboard v1.2** A geometry program for Middle School students. |

| **geohelp.zip** | 1k | 98-12-01 | | **Geometry Helper 89 v1.11** A collection of geometry programs. |

| **geom89.zip** | 1k | 03-12-14 | | **Geometry** A quick reference for common two dimensional and three dimensional geometric formulas. |

| **geometry89.zip** | 3k | 02-03-08 | | **Geometry Equations Solver** This program allows you to keep track of a list of equations, in different catagories, and then recall them later and solve by plugging in values. Saves a lot of time on tests and homework. |

| **geometry.geometry.zip** | 1k | 04-01-11 | | **Geometry Help 5.0** This program will help students in Geometry to find the area of 9 different 2D figures or the area and volume of 9 different 3D figures. Very useful on tests. |

| **geometry.zip** | 1k | 02-05-28 | | **Geometry v1.0** ¤In french only for now, sorry -_-.¤ Ce programme, écrit par un ami, contient toutes les fonctions nécessaires (de quoi faire ses contrôles sans réviser en fait ^_^) quand aux vecteurs, et m'a semblé être indispensable (ou au moins "à essayer"). J'ai convaincu son créateur de me laisser le poster, maintenant vous DEVEZ l'essayer. (il est compatible TI92+) |

| **geomtbx2.zip** | 1k | 98-09-06 | | **Geometry Toolbox 2 89 v1.0** A package that contains many solvers for geometry problems. |

| **geoprgm.zip** | 2k | 02-02-10 | | **General Geometry** This is a program that will solve systems of equations (ax+by=c) and find the distance, midpoint, and axis-intercepts of a line. |

| **geowork.zip** | 4k | 99-03-08 | | **Geometry Workshop v1.00** A very complete geometry helper with many features. |

| **geo.zip** | 1k | 98-11-21 | | **2D and 3D Area Formulas** Solves 2D and 3D geometric figures |

| **gformula.zip** | 18k | 04-02-17 | | **Geometry Formulas Plus** This program allows the user to quickly find the area, perimeter, surface area, or volume of many different geometrical figures. All answers are displayed in exact and approximate notation. This program also includes a quadratic solver that will give the vertex and roots (in exact format) of any quadratic equation. |

| **gh.zip** | 1k | 11-06-02 | | **Centroid-Orthocenter** Obtain the distance between the Centroid and the Orthocenter in a triangle. |

| **gi.zip** | 1k | 11-06-02 | | **Centroid-Incenter** Obtain the distance between the Centroid and the Incenter in a triangle. |

| **gk.zip** | 1k | 11-06-04 | | **Centroid-Symmedian** Obtain the distance between the Centroid and the Symmedian Point in a triangle. |

| **gl.zip** | 1k | 11-06-04 | | **Centroid-Longchamps** Obtain the distance between the Centroid and the de Longchamps Point in a triangle. |

| **gna.zip** | 1k | 11-06-04 | | **Centroid-Nagel** Obtain the distance between the Centroid and the Nagel Point in a triangle. |

| **gn.zip** | 1k | 11-06-04 | | **Centroid-Nine Point Center** Obtain the distance between the Centroid and the Nine-Point Center in a triangle. |

| **go.zip** | 1k | 11-06-04 | | **Centroid-Circumcenter** Obtain the distance between the Centroid and the Circumcenter in a triangle. |

| **gsp.zip** | 1k | 11-06-04 | | **Centroid-Spieker** Obtain the distance between the Centroid and the Spieker Point in a triangle. |

| **height_area.zip** | 1k | 11-06-05 | | **Height to Area** Obtain the area of a triangle given the lengths of its three altitudes. |

| **helper.zip** | 1k | 00-03-04 | | **Helper** This program has formulas for area, surface area, distance, midpoints and many more! Look for updates soon! |

| **heroform.zip** | 1k | 00-09-22 | | **Heroform** A formula program that will give you the area of a triangle when you imput the length of all three sides. Very useful... |

| **heron.zip** | 1k | 02-08-28 | | **Heron's Formula** This is a function where you enter the lengths of the sides of any triangle and you get the area..so you dont need to know the height of the triang to get the area. |

| **herosf.zip** | 1k | 00-07-20 | | **Hero's Formula** This program computes the area of a triangle given the lengths of the sides. |

| **hero.zip** | 1k | 04-08-24 | | **Herons Formula** This is a simple function that to calculate the area of a triangle, given you know all three sides. Only 81 bytes! |

| **hge.zip** | 1k | 11-06-05 | | **Orthocenter-Gergonne** Obtain the distance between the Orthocenter and the Gergonne Point in a triangle. |

| **hk.zip** | 1k | 11-06-05 | | **Orthocenter-Symmedian** Obtain the distance between the Orthocenter and the Symmedian Point in a triangle. |

| **hm.zip** | 1k | 11-06-05 | | **Orthocenter-Mittenpunkt** Obtain the distance between the Orthocenter and the Mittenpunkt in a triangle. |

| **hna.zip** | 1k | 11-06-05 | | **Orthocenter-Nagel** Obtain the distance between the Orthocenter and the Nagel Point in a triangle. |

| **hsp.zip** | 1k | 11-06-05 | | **Orthocenter-Spieker** Obtain the distance between the Orthocenter and the Spieker Point in a triangle. |

| **hyperbolagraph.zip** | 1k | 12-03-29 | | **Hyperbola Graph** Generates the graph of a hyperbola in either standard ((x-h)^2/a^2+(y-k)^2/b^2=1) or general (ax^2+by^2+cx+dy+e=0) form. |

| **hyperbolainfo.zip** | 1k | 12-03-29 | | **Conic Section - Hyperbola** Given a hyperbola in either general or standard form, this program will give the standard form equation, center, a value, verticies, b value, focal distance, foci, end points of focal chords, asymptotes, eccentricity, domain, range, and graph. |

| **ige.zip** | 1k | 11-06-05 | | **Incenter-Gergonne** Obtain the distance between the Incenter and the Gergonne Point in a triangle. |

| **ik.zip** | 1k | 11-06-05 | | **Incenter-Symmedian** Obtain the distance between the Incenter and the Symmedian Point in a triangle. |

| **il.zip** | 1k | 11-06-05 | | **Incenter-Longchamps** Obtain the distance between the Incenter and the de Longchamps Point in a triangle. |

| **im.zip** | 1k | 11-06-05 | | **Incenter-Mittenpunkt** Obtain the distance between the Incenter and the Mittenpunkt in a triangle. |

| **ina.zip** | 1k | 11-06-05 | | **Incenter-Nagel** Obtain the distance between the Incenter and the Nagel Point in a triangle. |

| **info.zip** | 1k | 11-06-05 | | **Triangle Center Symbols** Lists various symbols used to depict various important points in a triangle (i.e. incenter, orthocenter, etc.). |

| **inter4pt.zip** | 1k | 11-06-05 | | **Intersection of Four Points** Given four points, this function joins the first two and the last two and returns the intersection of those two lines. |

| **interiorangles.zip** | 2k | 01-12-15 | | **Interior Angles** Finds the sum of the interior angles of a regular polygon with n sides. Just input the number of sides. Also, if it is an equilateral polygon, it finds the value of one of the interior angles. |

| **in.zip** | 1k | 11-06-05 | | **Incenter-Nine Point** Obtain the distance between the Incenter and the Nine-Point in a triangle. |

| **io.zip** | 1k | 11-06-06 | | **Incenter-Circumcenter** Obtains the distance between the Incenter and the Circumcenter in a triangle. |

| **iscnstru.zip** | 1k | 11-06-06 | | **Is Constructable** Returns a boolean (true / false) indicating whether or a not a regular polygon with given sides is constructable with a compass and straightedge. |

| **isect.zip** | 4k | 00-03-02 | | **Intersect** Checks to see if 2 line segments intersect. Uses the cross product. User may move points arround with arrow keys. Use this to increase your understanding. |

| **isoboard.zip** | 6k | 10-09-25 | | **ISOBOARD** (v. 1.0.1) ISOBOARD is a program for drawing on isometric dot paper using your calculator! The program has save support, and is very easy to navigate. |

| **isp.zip** | 1k | 11-06-06 | | **Incenter-Spieker** Obtains the distance between the Incenter and the Spieker Point in a triangle. |

| **istri.zip** | 1k | 11-01-28 | | **IsTriangle** Test whether a triangle with three given side lengths exists. |

| **ko.zip** | 1k | 11-06-06 | | **Symmedian-Circumcenter** Obtains the distance between the Symmedian Point and the Circumcenter in a triangle. |

| **lge.zip** | 1k | 11-06-06 | | **Longchamps-Gergonne** Obtains the distance between the de Longchamps Point and the Gergonne Point in a triangle. |

| **lh.zip** | 1k | 11-06-06 | | **Longchamps-Orthocenter** Obtains the distance between the de Longchamps Point and the Orthocenter in a triangle. |

| **linearline.zip** | 1k | 09-09-06 | | **Linear Equation Solver** enter 2 coordinates and view the equation of the line connecting the points |

| **linebis.zip** | 1k | 11-06-08 | | **Angle Bisector** Given two non-parallel lines on the Cartesian plane, this program finds the two lines that bisect the angle created by the two original lines. |

| **linedist.zip** | 1k | 11-06-08 | | **Distances Between Non-Zero Dimensional Loci** Finds the distance between either a point and a line, a point and a plane, a line and a line, a plane and a plane, or a point and a parabola (in 2D). |

| **lineperp.zip** | 2k | 10-12-02 | | **Line Through Perpendicular Bisector** Give this function the coordinates of two points and it returns the equation of the perpendicular line through the midpoint. Handy and quick program that saves significant amounts of time and effort. |

| **lines.zip** | 1k | 10-11-26 | | **Lines: Slope, Distance, and Midpoint** Very simple program for finding the slope distance and midpoint of lines that I put together in math class. When you look at th properties of the file it says it's for a ti-92, I don't know why, but it is for a ti-89 |

| **linethru.zip** | 2k | 10-12-02 | | **Line Through** Give this function the coordinates of two points and it will return the equation of the line passing through them. Useful function for saving time and effort. |

| **linptslp.zip** | 1k | 11-06-08 | | **Point-Slope to Slope-Intercept** Given a point and the slope of the line, this program find the line through that given point with that given slope and puts the line in slope-intercept, or y-intercept, form. |

| **logbase.zip** | 1k | 11-06-08 | | **logBASE** Given two numbers, A and B, computes the logarithm of A in base B. Follows syntax of the TI-84's logBASE method, in order to maintain universality. |

| **lo.zip** | 1k | 11-06-08 | | **Longchamps-Circumcenter** Obtains the distance between the de Longchamps Point and the Circumcenter in a triangle. |

| **main.conic.zip** | 1k | 12-07-08 | | **Conic Sections** A program for quick access to values involving conic sections. |

| **math.conic5pt.zip** | 1k | 12-07-08 | | **5-Point Conic Section** Given 5 points (inputted as 10 arguments [x1,y1,x2,y2,...x5,y5]), this function finds the equation of the conic equation through them on the Cartesian plane. |

| **math.conictxt.zip** | 1k | 12-07-08 | | **Conic Text File** Contains valuable information concerning conic sections in the Cartesian plane. |

| **mathheaven.zip** | 8k | 02-10-14 | | **Geometry Heaven Suite** This is the MOST comprehensive Geometry Suite on Ticalc.org. This includes the popular Math Heaven: Geometry and also includes ALL the Geometry Postulates and Theorems for the WHOLE Book! This suite is for the students who just cant remember all those equations and theorems. This is a MUST for all Geometry students!! |

| **math.polygons.zip** | 1k | 12-07-08 | | **Regular Polygons** Valuable techniques and formulas involving regular n-gons. |

| **math_programs.zip** | 2k | 01-12-16 | | **Math Programs** These are programs that solve equations such as volume of cylinder with just the input of a few numbers |

| **median_area.zip** | 1k | 11-06-08 | | **Median Lengths to Area** Given the lengths of the three medians of a triangle, obtains the area of said triangle. |

| **mempi.zip** | 31k | 03-07-17 | | **Memorize PI!** This program is a utility to help you memorize everyone's favorite number. With a database of 300 digits [more in future versions] and a size less than 1 kb, this program is fully functional with no trash vars left over! |

| **met_rect.zip** | 1k | 02-02-10 | | **Met_Rect** Calcul de la valeur approchée d'une integrale par la methode des rectanges |

| **mk.zip** | 1k | 11-06-08 | | **Mittenpunkt-Symmedian** Obtains the distance between the Mittenpunkt and the Symmedian Point in a triangle. |

| **msp.zip** | 1k | 11-06-08 | | **Mittenpunkt-Spieker** Obtains the distance between the Mittenpunkt and the Spieker Point in a triangle. |

| **mw.zip** | 12k | 04-09-23 | | **MATHWIZ v1.2** This is an update of the previous MATHWIZ program. It still contains the 4 useful formulas. The pythagorean theorem which calculates the leg or hypotenuse of a right triangle; distance and more which calculates the distance, y-intercept formula, slope, and the midpoint of two points on the coordinate plane; volume and surface area calculates the volume and S.A. of a rectangular prism; and last but not least, the quadratic formula. IF THERE ARE ANY FORMULAS OTHER THAN LISTED THAT YOU WOULD LIKE ON HERE, PLEASE EMAIL ME! Hope you enjoy it! |

| **nag.zip** | 1k | 11-06-08 | | **Nagel-Centroid** Obtains the distance between the Nagel Point and the Centroid in a triangle. |

| **nai.zip** | 1k | 11-06-08 | | **Nagel-Incenter** Obtains the distance between the Nagel Point and the Incenter in a triangle. |

| **nan.zip** | 1k | 11-06-08 | | **Nagel-Nine** Obtains the distance between the Nagel Point and the Nine Point Center in a triangle. |

| **nao.zip** | 1k | 11-06-08 | | **Nagel-Circumcenter** Obtains the distance between the Nagel Point and the Circumcenter in a triangle. |

| **nasp.zip** | 1k | 11-06-08 | | **Nagel-Spieker** Obtains the distance between the Nagel Point and the Spieker Point in a triangle. |

| **ngon.zip** | 1k | 01-02-03 | | **Area of a Regular Polygon** Calculate the area of a regular polygon with n sides, given either the perimeter of the length of a side. Useful in particular for finding the area of an equilateral triangle. |

| **ng.zip** | 1k | 11-06-08 | | **Nine-Centroid** Obtains the distance between the Nine Point Center and the Centroid in a triangle. |

| **nh.zip** | 1k | 11-06-08 | | **Nine-Orthocenter** Obtains the distance between the Nine Point Center and the Orthocenter in a triangle. |

| **nl.zip** | 1k | 11-06-11 | | **Nine-Longchamps** Obtains the distance between the Nine Point Center and the de Longchamps Point in a triangle. |

| **noahshet.zip** | 3k | 11-06-12 | | **Noah Sheets** Some interesting and useful formulas found on the IMSA-created Noah Sheets. |

| **nsp.zip** | 1k | 11-06-13 | | **Nine-Spieker** Obtains the distance between the Nine Point Center and the Spieker Point in a triangle. |

| **numregin.zip** | 1k | 11-06-13 | | **Number of Regions, Etc.** Given a regular n-gon, calculates one of the following from: 1) Number of regions that the diagonals cut the n-gon into, Number of regions which the diagonals of the n-gon divide its center if on three are concurrent, Number of ways the n-gon can be divided into triangles, Number of intersection points formued inside a regular n-gon by its diagonals |

| **oh.zip** | 1k | 11-06-13 | | **Circumcenter-Orthocenter** Obtains the distance between the Circumcenter and the Orthocenter in a triangle. |

| **on.zip** | 1k | 11-06-13 | | **Circumcenter-Nine** Obtains the distance between the Circumcenter and the Nine Point Center in a triangle. |

| **para3ptx.zip** | 1k | 11-06-15 | | **Parabola Through Three Points** Given three points, this program finds the equation of the parabola (whose axis of symmetry is parallel to the X-axis) on the Cartesian plane. |

| **para3pty.zip** | 1k | 11-06-13 | | **Parabola Parallel to Y Axis** Given three points, this program will find the equation of the parabola that passes through these three points and is parallel to the y-axis. |

| **parabolaequation.zip** | 1k | 12-03-29 | | **Parabola Equation** This program will find the equation of a parabola given the vertex and directrix, vertex and focus, or focus and directrix. |

| **parabolagraph.zip** | 1k | 12-03-29 | | **Parabola Graph** Given the equation of any parabola (x^2 or y^2) in any form (standard, y-k=a(x-h)^2, or general, ax^2+bx+cy+d=0), this program generates its graph. |

| **parabolainfo.zip** | 1k | 12-03-29 | | **Conic Section - Parabola** Given the equation of a parabola in standard or general form, this program finds the standard form equation, vertex, a value, axis of symmetry, zeros, y intercept, focal distance, focus, directrix, domain, range, and graph. |

| **parallellinesnangles.zip** | 1k | 01-12-15 | | **Parallel Lines and Angles** This program draws a picture of what happens when a line crosses two parallel lines and the angles that form. A quick guide to which angles are equal to each other. |

| **parperp.zip** | 1k | 03-12-03 | | **parallel and perpendicular line finder** Finds the equation of a line either parallel or perpendicular to a given line. |

| **pi86.zip** | 1k | 00-06-12 | | **Pi** Calculates PI to an arbitrary amount of digits using the classic 16 arctan(1/5)-4 arctan(1/239) approach. Ported from TI-86 version by Andrew Selle. |

| **picalc.zip** | 1k | 00-03-20 | | **Pi Calculator** Calculates pi up to as much digits you like |

| **pieuler89.zip** | 2k | 03-05-18 | | **Pi: Euler's Method** This package of programs for all TI's quickly converges to pi using one of Euler's methods. |

| **pimem.zip** | 1k | 04-03-16 | | **Pi Memorization Helper - UPDATE** An update from the previous Pi Memorization Helper. This version now keeps high scores. The number in the high score represents the number of digits that you've memorized. This program currently has the first 1000 digits programmed. I have also included an animated screenshots for a better visual. Remember to read the readme! |

| **pinewt.zip** | 3k | 06-07-07 | | **PINEWT - Computes pi to housands of places** Using "infinite" precision arithmetic you can compute (slowly) PI to thousands of places by evaluating Newton's power series |

| **pi.zip** | 1k | 99-07-04 | | **Pi Training** This program helps to memorize pi decimals. |

| **planeutil.zip** | 1k | 99-02-28 | | **Cartesian Plane Utilities v1.0** Calculate Length, Midpoint, and slope of lines and line segments. |

| **plnethru.zip** | 1k | 11-06-13 | | **Plane Through** Given three points in 3D space, this program returns the equation of the plane that passes through all three points. After all, any three noncollinear points determine a unique plane! |

| **pls2004.zip** | 33k | 04-09-16 | | **Point Line Solver 2004!** his Program finds the missing point and the distance between two points when only one line equation and one point is given. This is a very useful program that can shave minutes off of your homework |

| **pntarea89.zip** | 37k | 06-10-27 | | **Point's Area** This program calculates the area of a convex polygon given the matrix of vertexes. |

| **pntlines89.zip** | 68k | 03-11-24 | | **Points & Lines Geometry Assistant** The program analyses a lot of analytic geometry problems with points and lines: line notation conversion, line across two points, lines intersection, line bisector, orthogonal lines, point on line projection, line-symmetric point, point-line distance, segment medium point and more over. The result is displayed in function or parametric graph mode and it can be saved for a future utilization. All data can be entered either in function or parametric notation. |

| **pointsolve.zip** | 15k | 02-11-11 | | **Points Solve** Do you know how to compute the distance of a line, its equation,...? You do now! This program allows the user to type in the coordinates for two points and have it calcualate the slope, distance, midpoint, x-intercept, y-intercept, and equation of the line. These are all displayed in a matrix in exact and approximate forms. The programs also allows the user to store the vars and graph the line between the two points. This is a very handy program when conducting multiple calculations! |

| **point.zip** | 2k | 02-01-01 | | **Point** This program displays the Midpoint, Distance, and Slope of the line segment connected by two points. The user need only enter the points. |

| **polydiag.zip** | 1k | 11-06-13 | | **Polygonal Diagonals** Obtains the length of every diagonal in a regular n-gon with a given length. Results returned as a list. |

| **polygon89.zip** | 11k | 04-07-15 | | **Regular Polygons** Calculates the area of a regular polygon given side length and number of sides. |

| **polygons.zip** | 1k | 11-06-13 | | **Regular Polygons** Calculates various properties of regular polygons based on other givens that the user provides. |

| **polyrad.zip** | 1k | 03-03-05 | | **PolyRad** Find the area of any regular polygon from the radius of an inscribed circle |

| **ptcircle.zip** | 1k | 01-06-12 | | **3 point circle** Finds the center and radius of the circle that passes through 3 points. |

| **ptsolver.zip** | 1k | 99-02-28 | | **Point Solver** given 2 points or slope and 1 point, solves for equation of line |

| **pyramid.zip** | 11k | 03-06-18 | | **Pyramid** Pyramid() is a program which calculates basic geometric parameters and dimensions of a given regular square pyramid. Ratios between the base, the height, the slant height, the edge and the diagonal of the pyramid are evident from the values of trigonometric functions of the angles. In the Cheops' pyramid you can find more than 25 ratios which include the golden mean ratio Phi. |

| **pythagoreantheorem.zip** | 1k | 12-04-01 | | **Pythagorean Theorem** A simple function to execute the pythagorean theorem, enter the unknown as x. Syntax: pyt(a,b,c) |

| **pythgoreantriple.zip** | 1k | 12-04-01 | | **Pythagorean Triple** Generatres a pythgorean triple given an a value. Syntax: pyttri(a) |

| **quadrilateralproperties.zip** | 2k | 01-12-15 | | **Quadrilateral Properties** Definitions/area of a square, rectangle, and parallelogram. |

| **quadrila.zip** | 1k | 11-06-15 | | **Quadrilaterals** Obtain several useful formulas involving various types of quadrilaterals. |

| **radcircm.zip** | 1k | 11-06-15 | | **Circumradius** Obtain the circumradius of a triangle with given side lengths. |

| **radin.zip** | 1k | 11-06-15 | | **Inradius** Obtains the inradius of a triangle with given side lengths. |

| **rect.zip** | 1k | 98-11-21 | | **Rectangles** A program used to find the Right Hand Sum and Left Hand Sum when doing integrals |

| **reference.zip** | 1k | 00-03-13 | | **Reference Angles** This is a basic program that can be used to calculate the reference angle of any point on the unit circle. Works for both degrees and radians. |

| **reff.zip** | 1k | 06-08-05 | | **Reference Angle Finder** Uses a simple dialog box. Enjoy. :) |

| **reflectn.zip** | 1k | 11-06-15 | | **Reflections and Rotations** Reflects & rotates points over points, points over lines, lines over lines, and lines over points. |

| **reg_poly.zip** | 1k | 11-06-15 | | **Regular Polygon Formulas** Obtain several useful formulas relating to regular polygons, such as its area, apothem, circumradius, etc. |

| **rtrapeul.zip** | 1k | 00-03-29 | | **Trapezoidal Rule, Riemman Sum, and Euler Method** |

| **school.zip** | 7k | 00-04-28 | | **School-Geometry-89 PLUS v1.0** School program that contains formulas for geometry and algebra. The program also contains the periodic table. |

| **shapes.zip** | 1k | 04-01-30 | | **Shapes Solver** This program solves for the lateral area, surface area, and volume of cones, cylinders, and spheres, and finds the area of trapazoids and ellipses. |

| **shape.zip** | 4k | 99-10-17 | | **MegA-lo-mAniAc ShApe Beta 1** A full geometry software with powerful tools. |

| **shoelace_13.zip** | 1k | 12-04-01 | | **Shoelace Formula** A program that executes the shoelace formula (computes the area of any polygon given the coordinates of all of the verticies). Syntax: shoelace({x1,x2,...,xn},{y1,y2,...,yn}) |

| **shoelacealgorithm.zip** | 1k | 11-06-15 | | **Shoelace Algorithm** Executes the Shoelace Algorithm, a relatively simple formula to calculate the exact area of any polygon given its correctly sorted (i.e. ordered) vertices & coordinates. |

| **shoelace.zip** | 1k | 98-11-21 | | **Shoelace Formula** Solves for the area of a Triangle on a graph |

| **simplify.zip** | 1k | 11-06-15 | | **Simplify** Given a decimal, this program will try to obtain an exact representation of that decimal in terms of radicals, fractions, pi, and e, as long as each numerator and denominator is less than five digits long, so as to keep the exact representation "realistic", in a sense. If this cannot be done, the function returns the boolean "false". |

| **solidspak.zip** | 12k | 03-12-18 | | **Solids Function Pak** Sick and tired of those large geometry programs that have more than solid functions, the stuff you don't need? Well, here are a group of 14 unique functions that solve for the surface area and volume of the seven basic solids. Each functions can be individually manipulated to be deleted, reproduced, etc. These are the most useful group of programs created. |

| **solve.zip** | 5k | 01-03-11 | | **Poly Solve** Used to find the area of a polgon, circumference, radius Etc. |

| **specialrighttriangles.zip** | 2k | 01-12-15 | | **Special Right Triangles** A guide to angles and lengths of the two special right triangles (45/45/90 & 30/60/90). |

| **surfaces89.zip** | 41k | 03-11-24 | | **Surfaces Analysis Assistant** The program analyses a parametric 3D surface and calculates Jacob matrix, characteristic, area, tangent plane, flux, surface integral and more over. All results can be saved and reloaded in a second time. |

| **surflgm.zip** | 9k | 02-03-23 | | **Surface Areas of Rotated Solids (Areas of Surfaces of Revol** This great program calculates the surface areas of solids generated by rotating a function around an axis. It is very accurate and has helped me in Calculus a lot! The nice thing about it is the you don't even need to do much work -- you don't need to worry about ugly functions like x=sqrt(2y-1), the program takes care of everything! It can even give you the exact value in terms of Pi if the function is not complicated. |

| **tangentplane.zip** | 2k | 09-10-18 | | **Tangent Plane to a 3D Surface** Enter as parameters tangplan(z,x,y) where z is a function of x and y, f(x,y), and x and y are input values. Get the equation of the plane tangent to the point on the surface. |

| **tangents.zip** | 1k | 11-06-15 | | **Tangential Line Procedure** Obtain an easy-to-follow, foolproof method to construct and/or draw internal and external tangents between two circles on a plane. |

| **temperat.zip** | 1k | 08-08-11 | | **Areas** Programa para calcular Areas y volumenes de distintas figuras geometricas y cuerpos geometricos |

| **tetrahed.zip** | 1k | 11-06-15 | | **Tetrahedron** Can find the volume of a tetrahedron from its edge length OR its coordinates on the three-dimensional plane. The program can also obtain various properties of a regular tetrahedron given its side length. Using an undefined variable also works to obtain the formulas, themselves, used in determining these formulas. |

| **theodolite89.zip** | 4k | 03-03-23 | | **Theodolite Formula 89** This is the original program in which the 83+ version was ported from. Solve for the unknown height, distance, user, or angle of any theodolite measured angle by putting 0 in for the unknown. |

| **threepointcirclefinder.zip** | 1k | 03-04-08 | | **Three point circle** This program is the short way of solving for D,E,and F when given three points and asked for the equation of a circle. Plug in the three points, and the program will return a matrix with D on the top and F on the bottom. Please read the readme for futher information |

| **tipi.zip** | 8k | 07-03-06 | | **TI-PI v1.0** Just in time for PI Day! Calculate pi on your 89 using a simple, easy to understand algorithm. |

| **topo2004.zip** | 18k | 04-12-07 | | **Topo 2004** calculate of polygonal closed and opened. by acimut and internal angles. calculate of Radiations. Trigonometrical leveling. Horizontal Distances. Interpolation of levels curves. Calculo de poligonales cerradas y abiertas. Por acimut y Ã¡ngulos internos. Calculo de Radiaciones. Nivelacion TrigonomÃ©trica. Correccion de Distancias Horizontales. Interpolacion de curvas de nivel. |

| **traparea.zip** | 1k | 11-06-15 | | **Trapezoidal Area** Obtains the area of any trapezoid given its side lengths. Notes: using this function, there is NO requirement that the trapezoid be cyclic or isosceles. |

| **trapezr89.zip** | 5k | 02-02-25 | | **Trapezoidal Rule v1.0** This program does the Trapezoidal Rule for you. It estimates areas under curves using this method. It's nice to use it to check your answers, if you are in calculus. |

| **traprule.zip** | 1k | 99-09-19 | | **Trapaziodal Rule v1.0** Uses trapaziodal rule to approximate finite integrals and gives the error bound. |

| **trap_zecoj.zip** | 2k | 02-03-11 | | **SFAPC: Trapezoidal Approximation Method** Stupid Functions for A P Calculus: find trapezoidal (or whatever you call it) approximation. Fast and simple! |

| **trap.zip** | 1k | 00-02-13 | | **Trapezoidal Rule ** Finds the trapezoidal rule approximation of an integral |

| **trapzoid.zip** | 1k | 11-06-15 | | **Trapezoid Solver** Obtains the lengths of the legs of the right triangles made by drawing the heights of the trapezoid, the coordinates of the intersection of the diagonals, the area of the trapezoid, and the area of each of the four triangles made by drawing in the diagonals of the trapezoid. Also yields some interesting and useful formulas concerning trapezoids, and not just isosceles or cyclic ones. |

| **trianglesolver_35.zip** | 1k | 11-03-03 | | **TriangleSolver** Solves a triangle, considering all the cases. |

| **triangle.zip** | 1k | 11-06-15 | | **Triangle** Obtains various important and useful formulas concerning triangles, including angle bisectors, etc. |

| **tricoord.zip** | 2k | 11-06-15 | | **Triangle Coordinates** Given the coordinates for the three vertices of a triangle, obtain the incenter, circumcenter, centroid, orthocenter, Gergonne Point, Nagel Point, the Fermat Point, and the equation for the three excircles. |

| **trilen.zip** | 1k | 11-01-28 | | **Triangle Side Length** Given the length of two sides of a triangle, this function calculates the range of possible lengths of the third side. |

| **tritype.zip** | 1k | 11-06-23 | | **Triangle Type** Input the lengths of 3 sides of a triangle and find if the triangle is right, acute, or obtuse. |

| **twopoint.zip** | 1k | 02-03-19 | | **TwoPoint** I fixed a typo of my previously contributed twopoint making the length work correctly. Sorry for the inconvenience. |

| **volrev.zip** | 1k | 98-11-21 | | **Volume of Solids of Revolution** Uses both washer and cylindrical shell methods |

| **volumefinder.zip** | 1k | 03-09-01 | | **Volume Finder by Calcsoft Technologies** This program is the same as Area Finder. It is a proud and well working program created by Calcsoft Tech. |

| **volumesrlgm.zip** | 12k | 02-04-08 | | **Volumes of Revolution LGM** This is an extremely powerful program that calcultes volumes of revolution. A function is rotated around an axis and creates a volume which can often be found by using disk (washer) or shell method. |

| **volume.zip** | 1k | 99-02-28 | | **Volumes of Solids of Rotation v1.2** Determines Volumes of Solids of Rotation about Horizontal, Vertical or Diagonal lines. |

| **wallis_pi_ti.zip** | 8k | 03-05-09 | | **Wallis Pi Convergence** Package Contains 2 files each for the TI-73, TI-82, TI-83, TI-83+, TI-85, TI-86, TI-89, TI-92, and TI-92+. A single text files covers the TI-80 and TI-81. Of course the TI-92+ files double for the V200. The 1st file (TI-73-TI-86) prompts for N (on the 89-V200 type 'wallis(N)') and starts converging. When you either press a key or it finishes it exits, clears the screen, and erases all variables used. The 2nd file for each on prompts for N, converges, and exits only when finished (unless you press ON). It doesn't clean up after itself. The 2nd file's only made for those w/ very little memory. Hope you enjoy. Product((2x)^2/((2x-1)(2x+1))), x=1 to infinity |

| **washer.zip** | 1k | 06-08-13 | | **Washer v0.5** Uses the washer method to find the volume and surface area of a solid bounded by two functions. Vertical and horizontal rotation allowed. |

| **wolframs.zip** | 2k | 11-06-12 | | **Valuable Geometric Formulas** Obtains several useful and exotic formulas that are frequently overlooked. Greatly simplifies even the most perplexing geometry problems. uView 1.99.6 compatible. |