Icosidodecahedral graph (source code)

= Icosidodecahedral graph

The icosidodecahedral graph is the skeleton of the <icosidodecahedron>. It has 30 vertices, 60 edges, 20 triangular faces, and 12 pentagonal faces. Every edge separates a triangle from a pentagon, so it attains equality in the <triangle-pentagon planar edge bound>.