Question

Angle r° = 2w°. What is the measure of angle r°?

120°
240°
143°
286°

Answer 1

D = 286°

Explanation:

Find both the angles of each right triangle.

Triangle A : 53°, 37°, 90°

180° - 127° = 53°

53° + 90° = 143°

180° - 143° = 37°

Triangle B: 90°, 53°, 37°

180° - 127° = 53°

53° + 90° = 143°

180° - 143° = 37°

Now, we find w.

w = 180° - 37° = 143°

r = 2w = 143 × 2

r = 286°