Respuesta :

bcalle
Using the CONVERSE of the Pythagorean Theorem:
If a^2 + b^2 = c^2, then the triangle is a right triangle. Remember c must be the longest length.
5^2 + 12^2 doe it equal 13^2
25 + 144 ?=? 169
169 ?=? 169 TRUE
These lengths form a right triangle