Dodecagram

Regular dodecagram
Regular dodecagram
	A regular dodecagram
Type	Regular star polygon
Edges and vertices	12
Schläfli symbol	{12/5}; t{6/5}
Coxeter–Dynkin diagrams	;
Symmetry group	Dihedral (D12)
Internal angle (degrees)	30°
Properties	star, cyclic, equilateral, isogonal, isotoxal
Dual polygon	self

In geometry, a dodecagram (from Greek δώδεκα (dṓdeka) 'twelve' and γραμμῆς (grammēs) 'line'^[1]) is a star polygon or compound with 12 vertices. There is one regular dodecagram polygon (with Schläfli symbol ${12/5}$ and a turning number of 5). There are also 4 regular compounds ${12/2},$ ${12/3},$ ${12/4},$ and ${12/6}.$

^ γραμμή, Henry George Liddell, Robert Scott, A Greek-English Lexicon, on Perseus