How to prove Pytagorean Theorem???

Since the fourth century AD, Pythagoras has commonly been given credit for discovering the Pythagorean theorem, a theorem in geometry that states that in a right-angled triangle the square of the hypotenuse (the side opposite the right angle), c, is equal to the sum of the squares of the other two sides, b and a—that is, a2 + b2 = c2.
Here is the steps to prove Pythagorean Theorem...
1. make 4 congruent triangles

2. Then, arrange them become rhombus

3. Look the yellow one, the side=c

4. So we know that the area of rhombus + the area of 4 right triagles are the area of square




Here is another way to prove Pytagorean theorem

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