Answer:
B.
Step-by-step explanation:
it sounds about right to me. I'm not the best with math
C
∠ 5 and ∠ 8 are adjacent angles and are supplementary, sum to 180° , then
∠ 8 + ∠ 5 = 180°
∠ 8 + 45° = 180° ( subtract 45° from both sides )
∠ 8 = 135° → C
