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Pythagoras by Proportions

Author:
David Cox
Topic:
Ratios
Move points A and B to change Triangle 1. The other triangles will adjust accordingly.
1. What proportions can you write to compare Triangles 2 and 3 to Triangle 1? 2. Solve your proportions for x (or y). 3. How can you use the fact that x + y = c to demonstrate the Pythagorean Theorem?

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