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Old 05/14/2010, 10:41 am   #43
Klatuu
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Join Date: Oct 2009
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The geometry puzzle reminded me of another site I vistited before -

http://www.ocf.berkeley.edu/~wwu/riddles/intro.shtml

- and some puzzles called sangaku. For example:

http://www.ocf.berkeley.edu/~wwu/rid...shtml#sangaku1


Find the side length of the internal square and the radii of the internal circles, in terms of a.

(I haven't figured it out, yet. Maybe I'm getting too mathematical here, anyway.)

The berkeley site has a bunch of other puzzles and riddles, though.
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