Stellated dodecagon

The stellated dodecagon, or sedog', is a polygon compound composed of two [[hexagon]s. As such it has 12 edges and 12 vertices.

Vertex coordinates
Coordinates for the vertices of a stellated hexagon of edge length 1 centered at the origin are given by:
 * (±1/2, ±$\sqrt{3}$/2),
 * (±1, 0),
 * (±$\sqrt{3}$/2, ±1/2),
 * (0, ±1).