PUZZLaTOMictMDescription: Tetrametric, six pieces. About 5" per edge. Being revised Make a tetrahedron with the six edge pieces. Not too difficult and a handsome display. A second challenge is to assemble the tetrahedron so as toget 3 different symbols showing at each vertex area. It is not as easy at it might look but it can be done since the device can be assembled in several different ways. An octahedron can be displayed by winding a single elastomeric band around Tetrametric as shown. A copyrighted product.