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added 81 characters in body

edited Sep 11, 2013 at 5:14

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For example, in the case of the triangular lattice there are tilings by rhombi where a given vertex can be a vertex of $3$, $4$ or $6$ rhombi. I'll draw a picture.

enter image description here

answered Sep 11, 2013 at 4:48

Robert Israel

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