Curated OER
Interior and Exterior Angles of Polygons
In this online math worksheet, students find the interior and exterior angles of polygons. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A terrific teaching tool!
Free Math Help
Free Math Help: Interior Angles of a Polygon
The Geometry tutorial discusses interior and exterior angles of a polygon. Sample exercises with explanations are included.