How to do hypotnus leg?

Question

Hypotenuse leg proofs 

Answer 1

use the Pythagorean theorem

hypotenuse squared = sum of the legs squared

for example the right triangle has sides 3,4 and 5

5= the hypotenuse, legs = 3 and 4

5^2 = 25

4^2 +3^2 = 16 + 9 = 25

You just proved it's a right triangle