Disdyakis dodecahedron

In geometry, a disdyakis dodecahedron, (also hexoctahedron, hexakis octahedron, octakis cube, octakis hexahedron, kisrhombic dodecahedron), is a Catalan solid with 48 faces and the dual to the Archimedean truncated cuboctahedron. As such it is face-transitive but with irregular face polygons. It resembles an augmented rhombic dodecahedron. Replacing each face of the rhombic dodecahedron with a flat pyramid creates a polyhedron that looks almost like the disdyakis dodecahedron, and is topologically equivalent to it.

Disdyakis dodecahedron
(rotating and 3D model)
Type	Catalan solid
Conway notation	mC
Coxeter diagram
Face polygon	scalene triangle
Faces	48
Edges	72
Vertices	26 = 6 + 8 + 12
Face configuration	V4.6.8
Symmetry group	Oh, B3, [4,3], *432
Dihedral angle	155° 4' 56" ${\displaystyle \arccos(-{\frac {71+12{\sqrt {2}}}{97}})}$
Dual polyhedron	truncated cuboctahedron
Properties	convex, face-transitive
net

More formally, the disdyakis dodecahedron is the Kleetope of the rhombic dodecahedron, and the barycentric subdivision of the cube or of the regular octahedron. The net of the rhombic dodecahedral pyramid also shares the same topology.