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A comment on Drilling a Square Hole (with a rotating bit). Parent comment

Re:Drilling a Square Hole (with a rotating bit) by lucifer on Tuesday September 01, 2009 @09:20AM (#797947)
You can't trisect an arc using only a compass and a straightedge. (You can simulate a straightedge using a compass.) Dividing a line into 3 parts is trivial.
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Re:Drilling a Square Hole (with a rotating bit) by sp332 on Tuesday September 01, 2009 @05:27PM (#798999)
Funny I'd forgotten that that was possible. http://upload.wikimedia.org/wikipedia/en/d/dc/Trisectsegment...
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