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Forum URL: http://www.cut-the-knot.org/cgi-bin/dcforum/forumctk.cgi
Forum Name: Thoughts and Suggestions
Topic ID: 25
Message ID: 0
#0, Error in proof
Posted by sbjnyc on Oct-30-07 at 02:00 PM
I was on http://www.cut-the-knot.org/Generalization/pythagoras.shtml and found a minor error you may want to correct. The proof starts with

4D = a²h²

which is clearly intended to be

4D² = a²h²