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by JadeNB
1378 days ago
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> I think some choices in Euclidea are too restrictive (e.g. collapsible compass, inability to draw arcs). Collapsible compass is not a choice of Euclidea, but a choice of Euclid. (Although, of course, one of the first things Euclid proves is that you can simulate a rigid compass with a collapsible compass: https://en.wikipedia.org/wiki/Compass_equivalence_theorem.) |
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