AI Math SolverA Pythagorean theorem calculator solves right-triangle side lengths. Enter any two sides to find the third using a² + b² = c², with the working shown.
The Pythagorean theorem relates the three sides of a right triangle: the squares of the two legs add up to the square of the hypotenuse. It is the foundation of distance and angle calculations.
Given any two sides, solve for the third — take a square root when finding the hypotenuse, or subtract and take a root when finding a leg. The calculator handles each case and labels the steps.
For a right triangle with legs a and b and hypotenuse c, a² + b² = c². Enter any two sides and the calculator solves for the third.
It applies only to right triangles — those with one 90-degree angle. The hypotenuse is the side opposite the right angle and is always the longest side.