# Exterior Angle Theorem

- Author:
- Jill Casey, Tim Brzezinski

## Exterior Angle Theorem

## Exterior Angle Theorem

The two colored angles are said to be the "remote interior" angles from the labeled exterior angle. What do you think the definition of __remote interior angle__ is?

## Exterior Angle Theorem #2

When you moved the slider, the two remote interior angles moved. What did you notice that happened? What do you think the __Exterior Angle Theorem__ is?