Rajasthan BoardEnglish MediumSTD 9MATHSLines And Angles4 Marks
Question
Define adjacent angles.
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Answer
Adjacent angles: Two angles are called adjacent angles, if:
They have the same vertex.
They have a common arm, and
Uncommon arms are on either side of the common arm.
In the figure above, $\angle\text{AOC}$ and $\angle\text{BOC}$ have a common vertex O.
Also, they have a common arm OC and the distinct arms AO and BO, lies on the opposite sides of the line OC.
Therefore, $\angle\text{AOC}$ and $\angle\text{BOC}$ are adjacent angles.
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