Great tridecagram

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Great tridecagram
Rank2
TypeRegular
Notation
Bowers style acronymGet
Coxeter diagramx13/5o
Schläfli symbol{13/5}
Elements
Edges13
Vertices13
Vertex figureDyad, length 2cos(5π/13)
Measures (edge length 1)
Circumradius
Inradius
Area
Angle
Central density5
Number of external pieces26
Level of complexity2
Related polytopes
ArmyTad, edge length
DualGreat tridecagram
ConjugatesTridecagon, Small tridecagram, Tridecagram, Medial tridecagram, Grand tridecagram
Convex coreTridecagon
Abstract & topological properties
Flag count26
Euler characteristic0
OrientableYes
Properties
SymmetryI2(13), order 26
ConvexNo
NatureTame

The great tridecagram is a non-convex polygon with 13 sides. It's created by taking the fourth stellation]] of a tridecagon. A regular great tridecagram has equal sides and equal angles.

It is one of five regular 13-sided star polygons, the other four being the small tridecagram, the tridecagram, the medial tridecagram, and the grand tridecagram.

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