PUZZLE MATH Measures of Polygon Angles

Students find sums of the measures of interior angles of polygons, sums of the measures of exterior angles of polygons, and measures of single angles in a regular polygon. They consider triangles, quadrilaterals, pentagons, hexagons, heptagons, octagons, decagons, and dodecagons. They receive immediate feedback as their answers decode a secret message. The self-checking nature motivates students and reduces overhead for teachers. Teachers, please require the students to show all of their work.