From the square to the Klein bottle
The animation shows how to get a Klein bottle from a square by identifying the couples of opposite sides in a particular way.
© matematita
animazione di Gian Marco Todesco
The image belongs to the sections...:
The Klein bottle (Topology)
Surfaces obtained from a rectangle (Topology)
Topology (Animations)
Further information:
http://www.toonz.com/personal/todesco