Next: First level normal tetraflexagon
Up: First Level Tetraflexagon
Previous: Tukey triangles
Figure 2:
Left: Permutation of the squares along the strip for a normal tetraflexagon. They run in order, subject to being flipped over, so the permutation is the identity. Right: Permutation for the tubulating flexagon. The normal order is not preserved, the permutation is not the identity.

Example user SuSE Linux 6.2
20000905