# Interior & Exterior Angles of a Triangle

- Author:
- Karen Campe

- Topic:
- Angles

## Record several sets of measurements in a chart like this one.

## What do you notice about the angle measures as the shape of the triangle changes?

1. What is the sum of the 3 interior angles?
2. What other angle pairs would you like to add together?
3. How is exterior related to the other angles?
4. What is the sum of the 3 exterior angles (one at each vertex)?