Free Pythagorean Theorem Calculator - Figures out based on user entry the missing side or missing hypotenuse of a right triangle. In addition, the calculator shows the proof of the Pythagorean Theorem and then determines by numerical evaluation if the 2 sides and hypotenuse you entered are a right triangle using the Pythagorean Theorem

This calculator has 3 inputs.

This calculator has 3 inputs.

a^{2} + b^{2} = c^{2}

a^{2} = c^{2} - b^{2}

b^{2} = c^{2} - a^{2}

For more math formulas, check out our Formula Dossier

a

b

For more math formulas, check out our Formula Dossier

- length
- the measurement or extent of something from end to end
- pythagorean theorem
- a fundamental relation in Euclidean geometry among the three sides of a right triangle. It states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides

a^{2}+ b^{2}= c^{2} - side
- line segment joining two vertices in a polygon also known as an edge
- theorem
- A statement provable using logic
- triangle
- a flat geometric figure that has three sides and three angles