Ditetragon

The ditetragon, or diteg, is a convex semiuniform octagon. As such it has 8 sides that alternate between two edge lengths, with each vertex joining one side of each length. All interior angles of a ditetragon measure 135°. If the side lengths are equal, the result is the regular octagon.

Coordinates
A ditetragon with Coxeter diagram a4b has veretx coordinates given by all permutations of:


 * $$\left(±\frac{a+\sqrt2b}{2},\,±\frac{a}{2}\right).$$