The cuboctahedron is one of the 13 Archimedean solids having as faces six equal squares and eight equal regular triangles and formed by cutting off the corners of a cube.  A cuboctahedron is a polyhedron with 8 triangular faces and 6 square faces.  A cuboctahedron has 12 identical vertices, with 2 triangles and 2 squares meeting at each, and 24 identical edges, each separating a triangle from a square.  As such, it is a quasi-regular polyhedron, i.e. an Archimedean solid that is not only vertex-transitive but also edge-transitive.  It is radially equilateral.