How to get a bitorus from a decagon: this is the first step. Here you can see the second s...
By identifying opposite sides of a rectangle, we get a torus. See also the interactive ani...
By identifying the opposite sides of a rectangle you get a torus. See also the interactive...
We can get a Moebius strip by taking a rectangle and pasting together two opposite sides a...
This animation shows that, by pasting together two opposite sides of a square, we can get ...
This map of Milan of the sixteenth century is a rough decagon. We can imagine to identify ...
This map of Milan of the sixteenth century is a rough decagon. We can imagine to identify ...
How to get a bitorus from a decagon: this is the second step. Here you can see the third s...
How to get a bitorus from a decagon: this is the third step. Here you can see the fourth s...
How to get a bitorus from a decagon: this is the fourth step. Here you can see the fifth s...
