For measuring angles, use a protractor. Using this tool accurately is a valuable skill for your physics stars. This brief video clip can be used to teach your class how to measure correctly.

Explains how to measure an angle in degrees using a protractor. Defines acute, right, and obtuse angles. Practice problems available. [8:22]

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]

Shows how to use a protractor to measure an angle. Identifies different types of angles: acute, obtuse, right.

Using a virtual protractor to measure angles.

Sal uses a protractor to create 10 degrees and 155 degrees angles. [2:41]

How to measure an angle using a protractor is demonstrated in this lesson. It is 3 of 7 in the series titled "Measuring Angles with a Protractor."

How to measure an angle using a protractor is demonstrated in this lesson. It is 5 of 7 in the series titled "Measuring Angles with a Protractor."

How to measure an angle using a protractor is demonstrated in this lesson. It is 7 of 7 in the series titled "Measuring Angles with a Protractor."

How to measure an angle using a protractor is demonstrated in this lesson. It is 1 of 7 in the series titled "Measuring Angles with a Protractor."