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Mar 8, 2021 at 23:35 comment added Robert Israel That could well be true, though I'd hate to generalize from a sample size of $1$.
Mar 5, 2021 at 16:07 comment added Max Alekseyev So, it looks like two odd-gons will always share an axis of symmetry.
Mar 5, 2021 at 0:18 comment added Joseph O'Rourke Very nice, Robert---Thanks!
Mar 4, 2021 at 19:18 history edited Robert Israel CC BY-SA 4.0
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Mar 4, 2021 at 19:11 history edited Robert Israel CC BY-SA 4.0
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Mar 4, 2021 at 3:54 comment added Robert Israel @JosephO'Rourke I thought it was obvious from the formulas: pentagon circumradius is $1$, heptagon inradius is $r$.
Mar 3, 2021 at 23:16 comment added user44143 I would like this answer better with fewer digits.
Mar 3, 2021 at 22:38 comment added Joseph O'Rourke Could you clarify: Is $r$ the heptagon radius when the pentagon has unit area? Or did you use unit radius for the pentagon?
Mar 3, 2021 at 18:46 history answered Robert Israel CC BY-SA 4.0