**How it works ?**

- 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!!!***Questions:**- 1) What geometric transformations took place in the applet above?
- 2) When working with the triangle’s interior angles, did any of these transformations change the measures of the blue or green angles?
- 3) From your observations, what is the sum of the measures of the interior angles of
*any triangle?* *any triangle?*