03-05 Polygon Angle Sum Theorems

Finding a Polygon Angle Sum Find the sum of the measures of the angles of a decagon. Using the Polygon Angle-Sum Theorem Find m ∠X in quadrilateral XYZW. Real-World Connection The game board has the shape of a regular hexagon. It is packaged in a rectangular box. The box uses four right triangles made of foam in its four corners. ................
................