## Algebra 1: Common Core (15th Edition)

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.