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  1. Pythagorean theorem - Wikipedia

    When Euclidean space is represented by a Cartesian coordinate system in analytic geometry, Euclidean distance satisfies the Pythagorean relation: the squared distance between two …

  2. Pythagorean theorem | Definition & History | Britannica

    Jan 2, 2026 · Pythagorean theorem, geometric theorem that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse. Although the theorem has long been …

  3. Pythagorean Theorem - Math is Fun

    When a triangle has a right angle (90°) ... ... and squares are made on each of the three sides, ... ... then the biggest square has the exact same area as the other two squares put together! …

  4. Pythagorean Theorem Calculator

    May 4, 2020 · This calculator solves the Pythagorean Theorem equation for sides a or b, or the hypotenuse c. The hypotenuse is the side of the triangle opposite the right angle.

  5. Pythagorean Theorem – Definition, Formula, Problems

    Dec 26, 2021 · Learn about the Pythagorean theorem in geometry. Get its definition, formula, and worked example math problems.

  6. Pythagoras - Stanford Encyclopedia of Philosophy

    Feb 23, 2005 · In the Pythagorean Memoirs, Pythagoras is said to have adopted the Monad and the Indefinite Dyad as incorporeal principles, from which arise first the numbers, then plane …

  7. Pythagorean Theorem | Brilliant Math & Science Wiki

    The Pythagorean theorem states that if a triangle has one right angle, then the square of the longest side, called the hypotenuse, is equal to the sum of the squares of the lengths of the …

  8. Intro to the Pythagorean theorem - Khan Academy

    The Pythagorean theorem is a cornerstone of math that helps us find the missing side length of a right triangle. In a right triangle with sides A, B, and hypotenuse C, the theorem states that A² …

  9. Pythagorean Theorem - MathBitsNotebook (Geo)

    Pythagorean Theorem: In any right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the legs. The Pythagorean Theorem can be …

  10. 9.2: The Pythagorean Theorem - Mathematics LibreTexts

    Jul 28, 2025 · However, one of the most famous theorems in all of mathematics does bear his name, the Pythagorean Theorem. Prior to revealing the contents of the Pythagorean Theorem, …