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## Polygons

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**Polygons**Objective: Define and classify polygons and related terms.**Polygons**Not Polygons • Polygon • A closed figure in a plane, formed by connecting line segments end point to endpoint with each segment intersecting exactly two others. • Side: • Each line segment • Vertex: • Each endpoint, where the sides meet.**Classify**• By number of sides • Naming a polygon: • List vertices in consecutive order. CBAED BCADE Pentagon ABCDE**Diagonal:**• A line segment that connects two nonconsecutive vertices. • Convex • No diagonal is outside the polygon. • Concave • At least one diagonal is outside the polygon.**Congruent polygons**• Corresponding sides and angles are congruent. (same size and shape) • Equilateral polygon • All sides have equal length. • Equiangular polygon • All angles have equal measure. • Regular polygon • Both equilateral and equiangular. Pg. 56 #1-21 Due Wednesday Quiz Tomorrow