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### 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…]

### How to Find Length and Distance in Cabri Jr.

You can use the **Appearance** menu in the Cabri Jr. geometry application for the TI-84 Plus calculator to find distance and length of segments. The **D. & Length** [more…]

### How to Determine Area in Cabri Jr. on the TI-84 Plus

In Cabri Jr. on the TI-84 Plus, you can use the **Area** tool in the **Measure** submenu of the **Appearance** menu to find the area of an already constructed circle, triangle, or quadrilateral. [more…]

### Perform Calculations in Cabri Jr. on the TI-84 Plus

Cabri Jr. for the TI-84 Plus graphing calculator is capable of adding, subtracting, multiplying, and dividing any two measurements appearing on the screen. It can also find the square root of a measurement [more…]

### Translate a Geometric Object in Cabri Jr.

When you translate a geometric object, you move it in a given direction for a given distance. To get Cabri Jr. on the TI-84 Plus calculator to do this for you, you use a segment to tell Cabri Jr. the direction [more…]

### How to Find the Slope in Cabri Jr. on the TI-84 Plus

In Cabri Jr. for the TI-84 Plus calculator, you can use the **Slope** tool in the **Measure** submenu of the **Appearance** menu to find the slope of a line, segment, or side of a triangle or quadrilateral. [more…]

### Construct Points of Intersection in Cabri Jr.

The Cabri Jr. geometry application for the TI-84 Plus calculator can construct the points of intersection of any pair of the following types of objects: lines, segments, circles, and sides of triangles/polygons [more…]