# Triangle Exterior Angle

- Author:
- Tim Brzezinski

In the app below, an

**exterior angle of a triangle**is shown. The 2 colored angles are referred to as its*remote interior angles.*## Interact with this app for a few minutes. LARGE POINTS are moveable.

What can we conclude about the measure of an exterior angle when we compare it to its remote interior angles? Explain.

What other theorem is readily made obvious here?