Dihexagon

The dihexagon, or dihig, is a convex semiuniform dodecagon. As such it has 12 sides that alternate between two edge lengths, with each vertex joining one side of each length. All interior angles of a dihexagon measure 150°. If the side lengths are equal, the result is the regular dodecagon.

Vertex Coordinates
The vertex coordinates of a dihexagon with side lengths a and b are given by

(±a/2,±(((asqrt(3))/2)+b))

(±((a+(bsqrt(3)))/2),±(((asqrt(3))+b)/2))

(±(a+((bsqrt(3))/2)),±(b/2))

For retrograde dihexagons, a is negative.