How do you find the center of two concentric circles with just a straightedge? (self.math)

submitted 3 months ago by CanadaPlus to c/math

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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.

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[-] CanadaPlus 2 points 3 months ago

I'm still curious about the no-tangents solution, but for my specific application I could probably physically rest a straightedge or flat plane on the circle somehow.

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this post was submitted on 25 Aug 2024

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