 Rank2
TypeRegular
SpaceSpherical
Notation
Bowers style acronymTed
Coxeter diagramx14o
Schläfli symbol{14}
Elements
Edges14
Vertices14
Measures (edge length 1)
Circumradius$\frac{1}{2\sin\frac{\pi}{14}} ≈ 2.24698$ Inradius$\frac{1}{2\tan\frac{\pi}{14}} ≈ 2.19064$ Area$\frac{7}{2\tan\frac{\pi}{14}} ≈ 15.33450$ Angle$\frac{6\pi}{7} ≈ 154.28571°$ Central density1
Number of pieces14
Level of complexity1
Related polytopes
ArmyTed
Abstract properties
Euler characteristic0
Topological properties
OrientableYes
Properties
SymmetryI2(14), order 28
ConvexYes
NatureTame

The tetradecagon is a polygon with 14 sides. A regular tetradecagon has equal sides and equal angles.

It has two non-compound stellations, these being the tetradecagram and the great tetradecagram.

It is the uniform truncation of the heptagon.

## Vertex coordinates

Coordinates for a regular tetradecagon of edge length 2sin(π/14), centered at the origin, are:

• (±1, 0),
• (±cos(π/7), ±sin(π/7)),
• (±cos(2π/7), ±sin(2π/7)),
• (±cos(3π/7), ±sin(3π/7)).