Bruno Baroncini, Collezione Universale, via Bertolini, Rovereto (Tn). La simmetria di ques...
A uniform polyhedron of type (3,3,3,3,4): around each vertex there are four equilateral tr...
The dual polyhedron of the uniform polyhedron (3,3,3,3,4): the faces are pentagons, all al...
the rotation group of a cube (432)