A decagon is a polygon with ten sides and ten angles.
A regular decagon is a polygon which is equiangular (all angles are congruent) and equilateral (all sides have the same length).
A decagram is a tenpointed star drawn with ten straight strokes. Its Schläfli symbol is {10/3} with the second number representing the vertex interval step from a regular
decagon, {10/1}.
The Schlafli symbol is a notation of the form {p,q,r,...} that defines regular polytopes and tessellations.
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Last updated:
Feb 11, 2017
