Two straight lines CD and AB cut each other at point O. Angle AOD = 75 degrees. What is the value (in degrees) of angle AOC?
Show answer & explanation
Correct answer: B
Explanation
Given:
∠AOD = 75°
The sum of angles on a straight line is 180°.
∠AOD + ∠AOC = 180°
75° + ∠AOC = 180°
∠AOC = 180° − 75° = 105°