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A heptagon is a polygon with seven sides and seven angles.
A regular heptagon is a polygon which is equiangular (all angles are congruent) and equilateral (all sides have the same length).
A heptagram or septegram is a seven-pointed star drawn with seven straight strokes.
There are two regular heptagrams, labeled by Schlafli symbols as {7/2} and {7/3}, with the second number representing the vertex interval step from a regular heptagram, {7/1}.
The Schlafli symbol is a notation of the form {p,q,r,...} that defines regular polytopes and tessellations.
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| By Antonio Gutierrez
Last updated:
March 18, 2009
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