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How can we triangulate a pair of pants in a simple way? I am looking for some triangulation where I can compute the Euler characterstic easily (which is -1 for a pair of pants).

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    Draw one and start subdividing!2012-02-08

1 Answers 1

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Here is one:

enter image description here

20 vertices, 43 edges and 22 triangles.

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    Thanks for the help. This is because pair of pants is homeomorphic to a disk with two holes.2012-02-08