Proof page added 28th March 20185th March 2018 by DanQuestions from WJEC module C4 on the topic of Proof by Contradiction added.http://www.deltamaths.co.uk/proof/Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to email this to a friend (Opens in new window)MoreClick to print (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Tumblr (Opens in new window)