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2 days ago vote accept زكريا حسناوي
2 days ago comment added timon92 @richrow Yes. There is a general phenomenon known as Miquel's six circle theorem en.wikipedia.org/wiki/…
2 days ago comment added richrow This really reminds me a similar problem, but with incenters instead of Ferma points. And the proofs are basically the same!
2 days ago history answered timon92 CC BY-SA 4.0