Calculate the hypotenuse of a right triangle using the Pythagorean theorem. Find missing sides with step-by-step solutions and visual diagrams.
The Pythagorean theorem is one of the most famous mathematical principles, discovered by the ancient Greek mathematician Pythagoras around 500 BCE. It provides a fundamental relationship between the sides of right triangles.
The theorem can be proven geometrically by arranging four identical right triangles around a square. The area relationships demonstrate that a² + b² must equal c².
While named after Pythagoras, versions of this theorem were known to Babylonians, Indians, and Chinese mathematicians centuries earlier. It remains one of the most important theorems in mathematics and has hundreds of different proofs.
The Pythagorean theorem states that in a right triangle, the square of the hypotenuse (the longest side) equals the sum of squares of the other two sides: a² + b² = c².