1. 1.6 Classify Polygons

2. Identifying Polygons Formed by three or more line segments called sides. It is not open. The sides do not cross. No curves. POLYGONS NOT POLYGONS

3. Terms Convex: a polygon is convex if no line that contains a side of the polygon contains a point in the interior of the polygon. Concave: a polygon that is nonconvex.

4. Classifying Polygons Number of Sides Type of PolygonNumber of Side Type of Polygon 3 Triangle 8 Octagon 4 Quadrilateral 9 Nonagon 5 Pentagon 10 Decagon 6 Hexagon 12 Dodecagon 7 Heptagon n n-gon

5. Definitions n-gon: a polygon with n number of sides. Equilateral: a polygon whose sides are all congruent. Equiangular: a polygon whose angles are all congruent. Regular: a polygon whose sides are equilateral and whose angles are equiangular.