Great stellated tetradecagon

The great stellated tetradecagon or gosted is a polygon compound composed of two heptagrams. As such it has 14 edges and 14 vertices.

It is the third stellation of the tetradecagon.

Its quotient prismatic equivalent is the heptagrammic antiprism, which is three-dimensional.

Vertex coordinates
Coordinates for a of edge length 2sin(2π/7), centered at the origin, are:


 * $$\left(\pm1,\,0\right),$$
 * $$\left(\pm\cos\frac{\pi}{7},\,\pm\sin\frac{\pi}{7}\right),$$
 * $$\left(\pm\cos\frac{2\pi}{7},\,\pm\sin\frac{2\pi}{7}\right),$$
 * $$\left(\pm\cos\frac{3\pi}{7},\,\pm\sin\frac{3\pi}{7}\right).$$