A regular tridecagon
|Edges and vertices||13|
|Symmetry group||Dihedral (D13), order 2×13|
|Internal angle (degrees)||≈152.308°|
|Properties||Convex, cyclic, equilateral, isogonal, isotoxal|
All sides of a regular tridecagon are the same length. Each corner is 147.27°. All corners added together equal 6840°.
The amount of space a regular tridecagon takes up is
a is the length of one of its sides.
The regular tridecagon is used as the shape of the Czech 20 korun coin.
- Eric W. Weisstein, Tridecagon at MathWorld.
Images for kids
Tridecagon Facts for Kids. Kiddle Encyclopedia.