User talk:Petaflot

Angle trisection
I have reverted your edit to angle trisection, as Sincerely D.Lazard (talk) 17:47, 19 February 2019 (UTC)
 * It is based on a source that has not been regularly published, and thus has not been verified by any competent mathematician.
 * If the construction given in this source would be correct, then Wantzel's theorem of 1837 would be wrong, which is unbelievable, as it has been checked by many mathematicians, and other proofs have been given in many textbooks.