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`Pythagorean Theorem Pythagorean Theorem Proofs  Proof #9 Sources and References`

# Pythagorean Theorem

The Pythagorean Theorem or Pythagoras's Theorem is a fundamental relation among the three sides of a right triangle. ```Pythagorean Theorem For a given right angled triangle, the sum of the areas of the two small squares on the legs, 𝑎 and 𝑏, is equal to the area of the biggest square on the hypotenuse, 𝑐. The algebraic expression is 𝑎2+𝑏2=𝑐2 ```

## Pythagorean Theorem Proofs

All proofs are from webpage, www.cut-the-knot.org/pythagoras.

## Sources and References

ID: 210400025 Last Updated: 4/25/2021 Revision: 0 Ref: References

1. B. Joseph, 1978, University Mathematics: A Textbook for Students of Science &amp; Engineering
2. Wheatstone, C., 1854, On the Formation of Powers from Arithmetical Progressions
3. Stroud, K.A., 2001, Engineering Mathematics
4. Coolidge, J.L., 1949, The Story of The Binomial Theorem  Home 5

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