What angles are called adjacent? What is the sum of adjacent angles?

univerkov | April 7, 2021 | education

Angles are called adjacent – these are angles that have one side in common and the other two lie on opposite rays.
The sum of adjacent angles is 180 degrees.
Suppose the adjacent angles are given: angle AOB and angle BOС. They have a common side of OA. Then the angle AOB + angle BOC = 180 degrees.

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