Pythagorean Theorem Calculator
Find Hypotenuse (c)
Calculate hypotenuse from two legs: c = √(a² + b²)
Find Missing Leg
Calculate a missing leg from hypotenuse and one leg: a = √(c² - b²)
Check Right Triangle
Verify if three sides form a right triangle
Formula
a² + b² = c² | c = √(a² + b²) | a = √(c² - b²)
Frequently Asked Questions
What is the Pythagorean theorem?
In a right triangle, the square of the hypotenuse (c) equals the sum of squares of the other two sides: a² + b² = c². For example, a 3-4-5 triangle: 9 + 16 = 25 = 5².
What are Pythagorean triples?
Pythagorean triples are sets of three positive integers that satisfy a² + b² = c². Common ones: (3,4,5), (5,12,13), (8,15,17), (7,24,25). Any multiple of a triple is also a triple: (6,8,10) = 2×(3,4,5).
You may also need
+
Scientific Calculator
Free online scientific calculator. Calculate trigonometric functions, logarithms, powers, roots, and factorials instantly.
Math+
Quadratic Equation Calculator
Free quadratic equation calculator. Solve ax² + bx + c = 0 and find roots, vertex, discriminant, and axis of symmetry.
Math~
Square Footage Calculator
Free square footage calculator. Calculate area in square feet for rooms, homes, flooring, and landscaping. Supports rectangular, circular, and triangular shapes.
Everyday