Proof of the Pythagorean Theorem
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Rik Blok  
Pythagorean theorem: in a right triangle the square of the hypotenuse is equal to the sum of the squares of the sides containing the right angle. Two proofs: one by a construction, and one by the method of similar triangles.  


Levels:  Middle School (68), High School (912) 
Languages:  English 
Math Topics:  Triangles and Other Polygons 
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