Checked content

File:Torus from rectangle.gif

Torus_from_rectangle.gif(400 × 300 pixels, file size: 262 KB, MIME type: image/gif, looped, 49 frames, 14 s)
Description A torus can be constructed by two transformations on a rectangle. First, we bend along one direction, joining opposite sides, creating a cylinder. Then, we bend the cylinder so the ends are joined. The resulting figure is a torus. However, the second transformation does not preserve lengths on the surface, as can be observed by the extension and compression of the checkered pattern.

Here's the diagram of this process:

Source Own work
Author Kieff
( Reusing this file)
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