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# adjacent

Given a right triangle with an acute angle $\theta$, the side of the triangle that is *adjacent* to $\theta$ is the side of the triangle that is also a side of $\theta$ and is not the hypotenuse.

When a phrase such as “adjacent of an angle” is used, one must determine from context whether it refers to this definition of adjacent or the other definition of adjacent. Note that the definition supplied above is specifically for right triangles.

Related:

Sohcahtoa

Synonym:

adjacent side

Type of Math Object:

Definition

Major Section:

Reference

Groups audience:

## Mathematics Subject Classification

51-01*no label found*

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