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### 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…]

### Hide and Delete Objects in Cabri Jr.

You can hide and delete objects in the Cabri Jr. geometry application for the TI-84 Plus graphing calculator. There is a big difference between hiding and deleting an object. If you [more…]

### How to Reflect Geometric Objects in Cabri Jr.

Cabri Jr. for the TI-84 Plus calculator allows objects to be reflected in a line or a segment. When a geometric object is reflected in a line, that line acts like a mirror — hence the term “reflection. [more…]

### Tile the Plane in GeoMaster on the TI-84 Plus

The **Symmetry** tool in the **TRFM** menu on the TI-84 Plus calculator can be used to tessellate (tile) the plane with a geometric figure by rotating that object 180 degrees about a specified point. Unlike the [more…]

### Rotate Geometric Objects with the TI-84 Plus

When a geometric object is rotated, it is rotated about a given point through a given angle. To use GeoMaster on the TI-84 Plus graphing calculator to rotate an already constructed geometric object, follow [more…]

### Making Geometry Easier

The page you are looking for was recently moved. Don't worry, it's still here; it just has a new address: http://www.dummies.com/how-to/content/simple-and-easy-geometry-tips-and-tools.html [more…]

### Math iPads and Hunting for Geometric Shapes

Teachers can use iPads in their geometry classrooms to encourage students to apply mathematical concepts to real world examples. By creating presentations on their iPads [more…]

### Math Topics to Study for the Miller Analogies Test (MAT)

Math: it really is everywhere, even the MAT. If you don’t like math, don’t worry: The Miller Analogies Test doesn’t require you to do a lot of calculation. But you do have to know a few things about the [more…]

### Geometry Practice Problems with Triangles and Polygons

A *polygon* is a geometric figure that has at least three sides. The triangle is the most basic polygon. You will find the following formulas and properties useful when answering questions involving triangle [more…]

### Coordinate Geometry Formulas

Coordinate geometry is the study of geometric figures graphed on a coordinate plane. The slope formula can be used to determine whether lines are parallel or perpendicular. The midpoint can be used to [more…]

### Transformation Rules for Geometry Problems

In coordinate geometry problems, there are special rules for certain types of transformations. To determine the image point when performing reflections, rotations, translations and dilations, use the following [more…]

### Circle Basics for Geometry Problems

To solve geometry problems about circles, you will need to know the following circle theorems involving tangents, secants, and chords. These theorems can be used to find information about angles, intercepted [more…]

### Formulas for Geometric Solids Problems

Many formulas are associated with the study of three-dimensional shapes in geometry. Here, you find formulas for calculating the volume, surface area, and lateral area of cylinders, cones, spheres, pyramids [more…]

### 1,001 Geometry Practice Problems For Dummies Cheat Sheet

Geometry is full of formulas, properties, and theorems. You can become successful in geometry by remembering the most important ones and learning how to apply them. Use this reference sheet as you practice [more…]