Student Tutorial: Geometry Basics: Angles

Instructions:

Learn about angles. For this tutorial you'll be using the Desmos Geometry Tools, which are free: https://www.desmos.com/geometry. Watch the video and follow along using the Desmos tools.

Click the arrows on the bottom to get started

Math Clip Art: Student Tutorial Title Page

Angles Title Card

Points A and B are on one ray, and points B and C are on another ray. Both rays are coplanar.

These two rays form an angle.

This is angle ABC.

Angles are measured in degrees or in radians.

Degrees range from 0° to 360°. Radians range from 0 to 2π.

Wherever lines, rays, or segments intersect, an angle is formed.

Some examples of angles.

Some real-world examples of angles.

Some real-world examples of angles.

Some real-world examples of angles.

Angle Measures, Example 1: An angle measure of 15 degrees.

Angle Measures, Example 2: An angle measure of 30 degrees.

Angle Measures, Example 3: An angle measure of 45 degrees.

Angle Measures, Example 4: An angle measure of 60 degrees.

Angle Measures, Example 5: An angle measure of 75 degrees.

Angle Measures, Example 6: An angle measure of 90 degrees.