From a decagon to a bitorus
How to get a bitorus from a decagon: this is the fourth step. Here you can see the fifth step and the third one.
© matematita
immagine di Gian Marco Todesco
The image belongs to the sections...:
From the exhibition matemilano (Topology)
The double torus (Topology)
Images from the topology section (From the exhibitions of matematita)
Further information:
http://www.toonz.com/personal/todesco