In mathematics, the Pythagorean theorem, also known as Pythagoras's theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle. It states that the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides. The theorem can be written as an equation relating the lengths of the sides a, b and c, often called the "Pythagorean equation":


수학에서 피타고라스의 정리 (Pythagorean theorem)는 직각 삼각형의 3면 중 유클리드 기하학에서 근본적인 관계입니다. 빗변의 사각형 (직각과 반대쪽)이 다른 두 변의 제곱의 합과 같다고 명시합니다.