Two straight lines CD and AB cut each other at point O. Angle AOD = 80 degrees. What is the value (in degrees) of angle AOC?
Show answer & explanation
Correct answer: B
Explanation
Given:
Two straight lines AB and CD intersect at point O.
∠AOD = 80°
According to the formula:
The sum of angles on a straight line = 180°
∠AOC = 180° − 80°
= 100°