Pythagoras' Theorem: Elaboration on the Similarity Argument
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|Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny|
|Euclid included two proofs of the Pythagorean theorem in his Elements. A better known Proposition I.47 (Bride's chair) and VI.31 which is consistently overlooked in the introductory geometry courses. The latter, however, renders the theorem virtually trivial, a one-liner, based on a simple similarity argument. The article presents two variants of the proof and a dynamic illustration.|
|Levels:||High School (9-12), College|
|Resource Types:||Articles, Web Interactive/Java|
|Math Topics:||Triangles and Other Polygons|
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