Triangle Angle Theorem

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