Beschreibung
A taut tetrahedron is a tetrahedron which lies flat in the euclidean space as it has two angles on top and bottom edges and four -angled edges everywhere else.
Definition
A tau tetrahedron is a tetrahedron whose edges have the angles or . At every tetrahedron vertex three edges meet. Their sum is equal to .
Definition
When flattening the tetrahedron the edges going around are called equitorial edges and the four equitorial edges bound a square lying truely inside the tetrahedron, called the equitorial square.
Eigenschaften
Eigenschaft