Why is the interior angle sum of an n-sided polygon equal to (n-2)180 deg? Why is the exterior angel sum of a polygon 360 deg? Need help with understanding what a rhombus or a kite is? Need insight on the midsegment of a trapezoid? This study guide provides this information and has 22 solved polygon problems. The study guide was produced using MS Word and Windows Paint. If the study guide does not download correctly, or you want to edit as you desire, email your proof of purchase to me at jrgeometry@yahoo.com, and I will email you a correctly formatted study guide.