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The Big 90 Degree Triangle Bit
The Big 90 Degree Triangle BitOn the surface of a sphere, an equal-sided triangle will have angles greater than 90°. At very small lengths, the difference will be undetectable, and since the Earth has hills and mountains small triangles will demonstrate nothing useful. At very long lengths, you could demonstrate the rotundity of the world this way, but it would be a surveying feat of epic ...