how do you work out the interior and extirior of a polygon

Question

what does interior and exteriorof a polygon?

Answer 1

You need to know that the exterior angles of a polygon add up to 360 degs. So if it has 10 sides, it has 10 angles, and each ext angle is 360/10 = 36 degs.

Each int angle is 180 - 36 degs = 144 degs.

 

Or you can use the fact taht the sum of the interior angle = (n-2) x 180 degs, where n is the no of sides.