Heptagon Interior & Exterior Angle Sum Theorems

Topic:
Angles
Directions: Mess around with the applet below for a few minutes. As you do, BE SURE TO DRAG THE PINK VERTICES around. After interacting with this applet, please answer the questions that appear below it.
Questions: 1) What can you conclude about the sum of the interior angle measures of a heptagon? Explain how you came to this conclusion. 2) What can you conclude about the sum of the exterior angle measures of a heptagon? Explain how you came to this conclusion.