Triangle Angle Theorems
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!!!
Triangle Angle Sum Theorem
From your observations, what is the sum of the measures of the interior angles of any triangle?
Sum of the Exterior angles of a triangle
From your observations, what is the sum of the measures of the exterior angles of any triangle?