In a geometric diagram, ∠A and ∠B are complementary, and they form a straight line with ∠C. If m∠A=x°, m∠B=(2x)°, and m∠C=90°, what is the measure of ∠B?(1 point)

Question

Responses

90°
90 degrees

30°
30 degrees

180°
180 degrees

6

Answer 1

The measure of ∠B is 180 - 90 - x = 90 - x°.