How do you find the sum of the angles in a polygon?

Well, the exterior angles of a polygon always add up to 360 degrees.

To find the sum of the interior angles, you're going to want to use the formula "180(n-2)". "n" being the number of sides of that polygon. 

I did this a little while ago take a look.

any questions?

http://gyazo.com/152d627a05e4fe0cf19dd64f358e6570