Dodecagon

Regular dodecagon
A regular dodecagon
TypeRegular polygon
Edges and vertices12
Schläfli symbol{12}, t{6}, tt{3}
Coxeter–Dynkin diagrams
Symmetry groupDihedral (D12), order 2×12
Internal angle (degrees)150°
PropertiesConvex, cyclic, equilateral, isogonal, isotoxal
Dual polygonSelf

In geometry, a dodecagon, or 12-gon, is any twelve-sided polygon.