Answer :
Two angles that lie in the same plane and have a common vertex and a common side but have no common interior points are the meaning of adjacent angles.
- An angle is a figure in which two rays meet at a common point. The vertex is the common endpoint of two rays that form the angle. Points that lie within the arms of the angle produced indefinitely are called interior points.
- If the two angles share a common vertex and side, those angles are called adjacent angles. Adjacent angles are categorized as complementary angles and supplementary angles.
- If the sum of two adjacent angles comes to 90°, those angles are called complementary angles because they complement each other. e.g. 40° and 50° are complementary angles. When the sum of two adjacent angles becomes 180° and the angles form a straight line, those angles are known as supplementary angles. e.g. 120° and 60° are supplementary angles.
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