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Pythagorean Theorem Calculator
Find any side of a right triangle using the Pythagorean theorem (a² + b² = c²).
About This Calculator
The Pythagorean theorem (a² + b² = c²) was known to Babylonian mathematicians 1,000 years before Pythagoras. The 3-4-5 right triangle has been used in construction for millennia to create perfect right angles. GPS positioning uses the 3D extension: a² + b² + c² = d².