Respuesta :
look up Pythagorean theorem and it will explain it better than i can click khan academy but basically try drawing a triangle and explain it
The Pythagorean Theorem.
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"
(a^2+b^2=c^2)