Pythagorean Theorem Calculator
Solve right triangle problems using a² + b² = c², where c is the hypotenuse. Choose which side to solve for, enter the other two, and get the answer with full step-by-step working.
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The Pythagorean theorem applies ONLY to right triangles. Common Pythagorean triples: 3-4-5, 5-12-13, 8-15-17, 7-24-25. Multiplying any triple by a constant gives another valid triple.