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Timeline for Proofs without words

Current License: CC BY-SA 2.5

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Jun 25, 2013 at 3:02 review Late answers
Jun 26, 2013 at 22:09
Apr 30, 2011 at 17:21 comment added I. J. Kennedy All the links in this post appear to be broken.
Feb 7, 2011 at 4:04 comment added Bob Palais There is an animation of the Dandelin Spheres construction depicted above in 3d-XplorMath in anaglyph 3d. 3d-xplormath.org Not really a proof, but visual descriptions of the relationship of cosine and sine curves and uniform circular motion: math.utah.edu/~palais/cose.html math.utah.edu/~palais/sine.html and epicycloids: math.utah.edu/~palais/daledots.swf
Feb 7, 2011 at 4:01 history answered Bob Palais CC BY-SA 2.5