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Posted September 24, 2011
For anyone interested in Mathematics, at sny level, the Pythagorian Theorem is ubiquitous, to say the least. I was surprised to learn that Pythagoras was a Johnny-come-lately in the right triangle game. I was also surprised at the story of a Cleveland Geometry teacher who devised about 300 different proofs for the Theorem. He taught at a Cleveland high school at the turn of the century. Now, a century later, I'm teaching Geometry at the same school. The book is loaded with surprises. By all means - read it
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Posted May 23, 2011