The marks on the surface of this regular tetrahedron represent the planes of symmetry.
Image used in the posters on polyhedra realized for the exhibition Simmetria, giochi di specchi - Symmetry, playing with mirrors.
elaborazione grafica di Roberta Granà
The image belongs to the sections...:
The symmetry group of the tetrahedron (*332) (Symmetry)
Posters about polyhedra (From the exhibitions of matematita)
Tetrahedron (3D geometry)