Double-edged straightedge constructions use only a straightedge, but use the fact that a straightedge has two parallel sides that are a fixed with apart. I've found one obscure paper from the 80s that describes it, but I know there are other resources out there. Do you know of any?
2026-03-27 18:48:43.1774637323
Is there a good resource for constructions using double-edged straightedge?
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