Question

How does a length of a hypotenuse in a right angle compared to the length of legs?

Answer 1

In a right triangle, the square of the hypotenuse is equal to the square of one leg plus the square of the other leg.

In math terms, where c is the hypotenuse and a and b are the legs:
$a^{2} + b^{2} = c^{2}$

This is called the Pythagorean Theorem.