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A 3700-year-old proof that the diagonal of a unit square has length √2
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"Are you aware, sir, that you are being rude?" "Quite. I always am. It is so good for people." From A lesson in crime by G. D. and M. Cole
Visit math.ubc.ca/~cass → On Hacker News Mar 2009 – Mar 2009
Clicking on an image will bring up the same image at higher resolution (a download of about about 100 KB). Clicking on that in turn will download an image of about 300 KB.