Khan Academy: Angles: Angle Basics

The video from Khan Academy provides practice questions for the SAT. Students will watch Sal work through a basic angles, arc lengths, and trig functions problem.

The video from Khan Academy provides practice questions for the SAT. Watch Sal work through a harder angles, arc lengths, and trig functions problem.

Determine which angle has a greater measure by looking at the size of the opening between the angle's rays. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Review what an angle is and how an angle is measured.

Review the following types of angles: acute, right, obtuse, and straight. Identify and draw types of angles in some practice problems.

Determine which angle has a greater measure by looking at the size of the opening between the angle's rays.

Use a protractor to construct angles. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice measuring angles using a circle protractor, solve problems about angles as part of a circle. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Explains what a protractor is and how it is used to measure the size of angles. Also discusses the different types of angles. [8:23]

Demonstrates how to use a protractor to measure angles. [4:05]