In the given figure, what is value (in degrees) of Q?

Show answer & explanation
Correct answer: D
Explanation
Given:
Angles = 70°, 150°, 20°, Q
According to the formula:
Exterior angle = Sum of the opposite interior angles
Q = 70° + 20° − 150°
= 90° − 150°
= −60°
(Interior angle) = 60°