Pythagorean Theorem Calculator
Solve for a missing side of a right-angled triangle.
Calculator Inputs
Results
The length of side C is:
5
Using the Theorem
The Pythagorean theorem is a fundamental principle in geometry. This calculator allows you to solve for any missing side of a right-angled triangle. Simply choose which side you need to find (a, b, or the hypotenuse c) and enter the lengths of the other two sides.
Frequently Asked Questions
What is the Pythagorean theorem?
The Pythagorean theorem states that in a right-angled triangle, the square of the length of the hypotenuse (the side opposite the right angle, side c) is equal to the sum of the squares of the other two sides (a² + b² = c²).
What is a hypotenuse?
The hypotenuse is the longest side of a right-angled triangle, and it is always the side opposite the right angle.