A Conversation for Spherical Geometry - Definitions
Right Triangle
Baron Grim Started conversation May 2, 2003
My favorite quirk in spherical geometry is that you can have a truly "right" triangle. Only on a sphere can you have an equilateral equiangular triangle with three 90 degree angles. While two wrongs don't make a right, three rights will get you back where you started. 
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Right Triangle
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