Definition:Angle/Adjacent/Also defined as
< Definition:Angle | Adjacent
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Definition
Some sources give that adjacent angles are the angles on a straight line at the intersection of that line and another.
Under such a definition, $\angle \alpha$ and $\angle \beta$ are adjacent in the diagram below:
Such adjacent angles are seen to be supplementary.
Sources
- 1989: Ephraim J. Borowski and Jonathan M. Borwein: Dictionary of Mathematics ... (previous) ... (next): adjacent angles
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): adjacent angles