The Pythagorean theorem relates the two legs of a right triangle to the hypotenuse. Squaring each leg and adding the results gives c squared, and the square root gives c.
⚠This calculator assumes a and b are the legs of a right triangle. It does not apply to non-right triangles.
How the Pythagorean Theorem Works
The theorem connects side lengths in right triangles. It is also the foundation of the coordinate distance formula.
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