1. Two angles must have a common vertex (the point where the two sides of the angle meet) in order to be considered adjacent.
2. The two angles must also have a common side, meaning that one side of each angle is the same line segment.
Therefore, in order for two angles to be considered adjacent angles, they must share both a common vertex and a common side.
what 2 things must angles share tobe considered adjacent angles step by step
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