Answer:
25^2 + 36^2 = 49^2
Explanation:
You can use the Pythagorean theorem to determine if it is a right triangle
If it is a right triangle
a^2+b^2 = c^2 where a and b are the legs and c is the hypotenuse
25^2 + 36^2 = 49^2
If this is true, then it is a right triangle