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Using the TI-84 Graphing Calculator

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Start GeoMaster on the TI-84 Plus Calculator

When you start the geometry application GeoMaster on the TI-84 Plus calculator, you see the version number on the screen. If that number is smaller than 1.10 for GeoMaster, check out [more…]

Create and Save GeoMaster Files on the TI-84 Plus

You can create a GeoMaster file in two ways on the TI-84 Plus calculator. If the GeoMaster screen is empty, just start creating your geometric figures. If the GeoMaster screen is not empty, select [more…]

GeoMaster Menus on the TI-84 Plus Calculator

When you enter GeoMaster, the Menu bar appears at the bottom of the Ti-84 Plus calculator screen. If you are re-entering the application after it has been running in the background, press [more…]

Construct Lines, Segments, Rays, and Vectors on the TI-84 Plus

Because two points determine a line, segment, ray, or vector, the directions for creating these objects with GeoMaster on the TI-84 Plus graphing calculator are much the same. To construct such objects [more…]

Construct Circles with GeoMaster on the TI-84 Plus

A circle is determined by its center and its radius. The GeoMaster DRAW menu contains a plethora of tools that enable you to do mundane things such as construct lines, segments, triangles, polygons, and [more…]

Construct Triangles and Arcs with GeoMaster on the TI-84 Plus

A triangle and an arc are determined by three points, so their construction is much the same. The GeoMaster DRAW menu on the TI-84 Plus calculator offers tools that enable you to construct triangles, arcs [more…]

Construct Irregular Polygons with TI-84 Plus GeoMaster

You can use the GeoMaster DRAW menu on the TI-84 Plus graphing calculator to create irregular and regular polygons, circles, triangles, and many other basic geometric shapes. To create an irregular polygon [more…]

Construct Regular Polygons with TI-84 Plus GeoMaster

A regular polygon is determined by its center and the number of its sides. You can use the GeoMaster DRAW menu on the TI-84 Plus graphing calculator to create regular and irregular polygons, circles, triangles [more…]

Construct Perpendicular and Parallel Lines with GeoMaster

To construct perpendicular or parallel lines with GeoMaster on the TI-84 Plus graphing calculator, you have to start with an already constructed line, segment, ray, vector, or side of a polygon or triangle [more…]

How to Move Figures with GeoMaster on the TI-84 Plus

When you move an object in GeoMaster on the TI-84 Plus, all other objects associated with that object will also undergo a change. To reshape a polygon or triangle, move one or more of its vertices. To [more…]

Hide and Delete Objects with GeoMaster on the TI-84 Plus

There is a big difference between hiding and deleting an object in GeoMaster on the TI-84 Plus graphing calculator. If you hide an object, you can, if you so choose, bring it back in view at a later time [more…]

Find Length and Distance with GeoMaster

The Distance/Length tool in the MEAS menu in GeoMaster on the TI-84 Plus graphing calculator is used to find the distance between two points, the length of a segment or vector, the circumference of a circle [more…]

Find the Area with GeoMaster on the TI-84 Plus

GeoMaster on the TI-84 Plus graphing calculator can find the area of any circle, triangle, or simple polygon constructed using the Circle, Triangle, Polygon [more…]

Find the Area of a Polygon Having Intersecting Sides

GeoMaster on the TI-84 Plus calculator can help you find the area of a polygon having intersecting sides. To find the area of a polygon having intersecting sides, break the polygon down into simple polygons [more…]

Reflect Geometric Objects with the TI-84 Plus

When a geometric object is reflected in a line, that line acts like a mirror — hence the term reflection — so the mirror image of the original object appears on the other side of the line. GeoMaster on [more…]

Dilate Geometric Objects on the TI-84 Plus

The Dilation tool in the in the TRFM menu on the TI-84 Plus is used to increase or decrease the size of an object by a factor of k. When 0 < k < 1, the object decreases in size, and when [more…]

Rotate Geometric Objects in Cabri Jr. on the TI-84 Plus

You can rotate geometric objects in the Cabri Jr. application on the TI-84 Plus calculator. When a geometric object is rotated, it is rotated about a given point through a given angle. To rotate an already [more…]

Dilate Geometric Objects in Cabri Jr. on the TI-84 Plus

You can dilate geometric objects in the Cabri Jr. geometry application for the TI-84 Plus calculator. The Dilation tool in the in the F4 Transformation [more…]

How to Create Files in Cabri Jr. on the TI-84 Plus

Some people like to just clear the TI-84 Plus screen of their old work and then start creating their new geometric constructions. Even if you are that sort, you should start fresh by creating a new file [more…]

How to Save Files in Cabri Jr. on the TI-84 Plus

After creating geometric figures in the Cabri Jr. geometry application on the TI-84 plus calculator, you can save your work to a file using either the [more…]

How to Use Cabri Jr. Menus on the TI-84 Plus

The Cabri Jr. geometry application on the TI-84 Plus has five menus that are accessed by pressing the Graphing keys ([Y=], [WINDOW], [ZOOM], [TRACE], and [more…]

Construct Circles in Cabri Jr. on the TI-84 Plus

You can use the Cabri Jr. geometry application on the TI-84 Plus to construct circles. A circle is determined by entering its center and its radius. To construct a circle, follow these steps: [more…]

Construct Triangles and Quadrilaterals in Cabri Jr.

Three points determine a triangle and four points determine a quadrilateral. So the construction of each is quite similar. To construct a triangle or quadrilateral in the Cabri Jr. geometry application [more…]

Construct Perpendicular and Parallel Lines in Cabri Jr.

You can construct perpendicular or parallel lines in the Cabri Jr. geometry application on the TI-84 Plus calculator. To construct such lines, you have to start with an already constructed line, segment [more…]

Move and Reshape Figures in Cabri Jr.

You can move and reshape figures in the Cabri Jr. geometry application for the TI-84 Plus. When you move an object, all other objects associated with that object will also undergo a change. The circle [more…]

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