Answer
Yes, this is a right triangle.
Work Step by Step
You have to use the Pythagorean theorem to determine if this is a right triangle;
A=22, B=120, C=122
$a^{2}$+$b^{2}$=$c^{2}$
$22^{2}$+$120^{2}$=$122^{2}$ -simplify the exponents-
484+14400=14884-simplify like terms-
14884=14884
They are equal so yes this is a right triangle.
