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polygon

Polygon

A closed plane figure for which all sides are line segments. The name of a polygon describes the number of sides. A polygon which has all sides mutually congruent and all angles mutually congruent is called a regular polygon.

 

Number of sidesPolygon name


pentagon


regular undecagon


octagon

3triangle
4quadrilateral
5pentagon
6hexagon
7heptagon
8octagon
9nonagon
10decagon
11undecagon
12dodecagon
nn-gon
  

 

See also

Area of a regular polygon, area of a convex polygon

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