Octadecagon

From Wikipedia, the free encyclopedia

An octadecagon is a polygon with 18 sides and 18 vertexes. Each angle of a regular octadecagon mesures 160°. Another name for an octadecagon is "octakaidecagon".

[edit] External links

• Eric W. Weisstein, Octadecagon at MathWorld.

v • d • e Polygons Henagon · Digon · Triangle · Quadrilateral · Pentagon · Hexagon · Heptagon · Octagon · Enneagon (Nonagon) · Decagon · Hendecagon · Dodecagon · Triskaidecagon · Tetradecagon · Pentadecagon · Hexadecagon · Heptadecagon · Octadecagon · Enneadecagon · Icosagon · Chiliagon · Myriagon

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