Talk:Triangle group

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[edit] More references?

It would be nice to have a link to the proof of the classification. The current reference doesn't say much.

[edit] Missing one

Isn't this page missing the finite spherical group (1,1,1)? That is - a group made of two triangles where the three edges are along the equator?

There's also the group being one big triangle on a sphere (.5, .5, .5) where the edges have zero length and all three corners are 360 degree reflex angles.

Pmurray bigpond.com 01:22, 26 October 2006 (UTC)