Sections of a cube
If you cut a cube with planes perpendicular to a diagonal, you get sections that are equilateral triangles or equiangular hexagons with the same symmetry as an equilateral triangle or also a regular hexagon.
© matematita
immagine di Gian Marco Todesco
The image belongs to the sections...:
From "fun with hexagons" (From "XlaTangente")
Cutting a cube (3D geometry)
Further information:
http://www.toonz.com/personal/todesco