# Triangle Angle Theorem

- Author:
- SarahKJohnson, Tim Brzezinski

Interact with the applet below for a few minutes.
Then, answer the questions that follow.

*Be sure to change the locations of the triangle's WHITE VERTICES each time before you drag the slider!!!*## Respond to the Questions below on page 12 in your workbook

**Questions:**1) From your observations, what is the sum of the measures of the interior angles of

*any triangle?*2) Altogether, the 3 angles of a triangle form a ____________ ?

*3) Now use this information to work on pages 12 and 13*