The sum of the angles in the oval is not 360 degrees? This is the turn!

They give themselves grass. Can I be?
The sum of the external angles or the internal?
The triangle is disgusting, because it has only 180 degrees of sum of angles. The square is quiet, the rectangle is not on the roof either. And only the five-angle and other multi-angle unexpectedly summarize the angles and try to understand, and where is the nail?