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jacobolus
on Aug 30, 2017
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Don’t Fall for Babylonian Trigonometry Hype
He bases his metrical geometry on “quadrance” (squared distance) and “spread” (squared sine) rather than distance and angle measure.
gus_massa
on Aug 30, 2017
[–]
Then, how does he deal with the the pentagon? because that needs sqrt(5+sqrt(5)) or something similar with two nested square roots.
jacobolus
on Aug 30, 2017
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To deal with pentagons you need to extend the field of rationals by an additional element. Wildberger is kind of ambivalent about finite field extensions.
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