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If we take an isosceles triangle with a big abtuse angle, and attach the two slanting side...
From the point of view of topology, this pipe, that has been taken from a spare part of a ...
With a pipe taken from a spare part of a car we can make a torus.
From the point of view of topology, this pipe, that has been taken from a spare part of a ...
From the topological point of view, a belt is an example of cylinder; if we tie it on the ...
With the sleeve of a wind-cheater that can be tied and untied we can imitate the topologic...
From the point of view of topology, the ribbons for curtains are an example of cylinder.
From the point of view of topology, a pair of trousers is a sphere with three holes; we c...
From the point of view of topology, this pipe, that has been taken from a spare part of a ...
surfaces around the world