Hexagram

The hexagram, or shig, also called the stellated hexagon, is the simplest possible polygon compound, being the compound of two triangles. As such it has 6 edges and 6 vertices. If the components are equilateral tirangles, the compound will be regular.

It is the only stellation of the regular hexagon, which is the highest polygon to have no stellations aside from compounds.

Vertex coordinates
The vertices of a hexagram of edge length 1 centered at the origin are:
 * (0, ±$\sqrt{3}$/3).
 * (±1/2, ±$\sqrt{3}$/6),