## Polygon is a plane figure of 3 or more sides.polygonHere are some polygons:
A polygon where all the sides are the same length is a regular polygon. All the figures above, except the quadrilateral, are regular polygons. Notice how the more sides a regular polygon has the more it looks like a circle! The interior angles of a polygon: Each angle A = 180 (N - 2) / N degrees where N is the number of sides. Now, here's a problem for you: What is the measure of an interior angle of a regular octagon? Octagon interior angle = ______ degrees. |