The cube
is divided in five parts; a central tetrahedron (edge=EÖ2 )
as well as
four pyramids with a triangular basis (edge= EÖ2) and
three
triangles (one edge EÖ2 and two edges = E)
The cube
is divided in five parts; a central tetrahedron (edge=EÖ2 )
as well as
four pyramids with a triangular basis (edge= EÖ2) and
three
triangles (one edge EÖ2 and two edges = E)