Answer and Explanation
Your Answer is
Correct Answer is C
Explanation
Because ∠A is 3 times of ∠B, so 4∠B=180°, ∠B=45°, so ∠A=135°. Choose C.
9. One angle,∠A, has 3 times the measure of its supplement, ∠B, as depicted below. What is the degree measure of ∠A?
