Cutting out an icosahedron
The planes that we need to cut out a regular icosahedron (the figure in red in the centre) from a sphere.
© matematita
immagine di Gian Marco Todesco
The image belongs to the sections...:
Icosahedron (3D geometry)
Star polyhedra (3D geometry)
Further information:
http://www.toonz.com/personal/todesco
