The Pythagorean Theorem is, in Euclidean geometry called a basis for distance settings. Through triangulation, for example, it is possible to do surveys. Pythagoras of Samos (580a.C.-500a.C.) is the Greek philosopher who is credited to the statement of the theorem first. He and his followers are responsible for important research in mathematics, astronomy and music theory (Millman & Parker, 1981).
This theorem has wide application nowadays, including aeronautics; we use the concepts of Pythagoras so there is no collision on flights that are constantly made calculations for the routes of airplanes (Mandelbrot, 1982).