Pythagorean Theorem Calculator

Pythagorean Theorem Calculator

Solve for any side of a right triangle using the Pythagorean theorem (a² + b² = c²).

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Use this Pythagorean Theorem Calculator calculator for quick, clear estimates. Try a tiny example to see the impact of each input.

Q: What is the Pythagorean Theorem?
The Pythagorean Theorem is a fundamental relation in Euclidean geometry among the three sides of a right-angled triangle, stating that the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.

What is the formula for the Pythagorean Theorem?
The formula for the Pythagorean Theorem is a² + b² = c², where ‘a’ and ‘b’ are the lengths of the two shorter sides (legs) of the right triangle, and ‘c’ is the length of the hypotenuse.

When is the Pythagorean Theorem used?
The Pythagorean Theorem is used to find the length of an unknown side of a right-angled triangle when the lengths of the other two sides are known, and it has applications in construction, navigation, and engineering.

What is a hypotenuse?
In a right-angled triangle, the hypotenuse is the longest side, which is always opposite the right angle.