Answer:
D = 286°
Step-by-step 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°
