A (3,4,5,4) uniform polyhedron. Around each vertex you can see an equilateral triangle, a square, a regular pentagon, and a square.
This picture has been used for the posters on polyhedra of the exhibition Simmetria, giochi di specchi - Symmetry, playing with mirrors.
elaborazione grafica di Roberta Granà
The image belongs to the sections...:
From "fragments of topology" (From "XlaTangente")
The symmetry group of the dodecahedron (*532) (Symmetry)
Uniform polyhedra and their duals (3D geometry)
Posters about polyhedra (From the exhibitions of matematita)