A hyperoctahedron
A model of Schlegel's diagram of a hyperoctahedron, which is one of the six regular polytypes in 4D space. The hyperoctahedron has 8 vertices and 16 3D faces, which are tetrahedra.
© matematita
The image belongs to the sections...:
From "towards the 4th dimension" (From "XlaTangente")
Hyperoctahedron (4D geometry)