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 February 22nd, 2019, 06:58 AM #1 Newbie   Joined: Feb 2019 From: Uzbekistan Posts: 1 Thanks: 0 Dividing any angle into 3 equal parts using compass and ruler Hello all, my father find how to find any given angle into 3 equal parts using compass and ruler. if any suggestions, pls feel free Hurmat bilan / Best regards, Husniddin Goyibov (Mr.) Mob: +99891 112 30 90 (whatsapp/telegram/wechat/imo) e-mail:husniddin0982@gmail.com (alternative) skype: querty23 wechat: straight2011
 February 22nd, 2019, 07:44 AM #2 Math Team     Joined: Jul 2011 From: Texas Posts: 3,034 Thanks: 1621 link ... Angle Trisection Thanks from topsquark and Walagaster
 February 22nd, 2019, 04:03 PM #3 Senior Member   Joined: Sep 2016 From: USA Posts: 669 Thanks: 440 Math Focus: Dynamical systems, analytic function theory, numerics When you say "ruler", do you mean a marked straightedge? There are well-known methods for doing this, so if your father has invented a new one then that is cool. Somehow, I suspect you actually mean an unmarked straightedge, in which case your father is wrong. There is a mathematical theorem which has proven this is impossible. Last edited by skipjack; April 24th, 2019 at 10:55 AM.

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