Cuboctahedron

The cuboctahedron is a quasiregular polyhedron. It consists of 6 squares and 8 equilateral triangles, with two of each joining at a vertex. It can be derived as a rectified cube or octahedron.

Vertex coordinates
A cuboctahedron of side length 1 has vertex coordinates given by all permutations of (±$\sqrt{2}$/2, ±$\sqrt{2}$/2, 0).