Here's the question you clicked on:
christinaxxx
how do you find the sum of exterior angles in a convex polygon?
As you rotate through the exterior angles to get back to your starting point, you will find that you have completed a circle. Therefore the sum of the exterior angles of any convex polygon is always 360 degrees.
Look at that!!! A complete circle...360 degrees.
so it's kinda like a trick question?
I don't think so. It's just something you should know.
well alright then...
If you want a visual/animation, you can play around with this http://www.mathopenref.com/polygonexteriorangles.html