The Wikipedia article on Steiner constructions mentions it, but doesn’t explain it, and the source linked is a book I don’t have. This has come up in a practical project.

  • CanadaPlus@lemmy.sdf.orgOP
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    2 months ago

    Exactly. I could do a straightedge construction of 90 degrees, but not until I have a center, so I’m back at square one.