
12-02-2016, 11:51 AM
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Senior Member
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Join Date: May 2010
Posts: 3,088
Thanks: 5,066
Thanked 123,641 Times in 3,092 Posts
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and now...
....moving on to non-Euclidean geometry....and topography....not on a plane....but ever so lovely...great thread. And one double triangle....
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