Adjacent

Pronunciation: /əˈdʒeɪ sənt/ ?

Two features on a shape are adjacent if they are next to each other.[1]

Adjacent parts of a polygon

Quadrilateral showing adjacent sides and angles
Figure 1 - Polygon

In the polygon in figure 1:

  • the angles A and B are adjacent,
  • the sides g and h are adjacent, and
  • angle A is adjacent to side g.

However,

  • angle A is not adjacent to angle C,
  • side g is not adjacent to angle D, and
  • sides g and i are not adjacent.

Adjacent Angles on Intersecting Lines

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Figure 2: Adjacent angles on intersecting lines.

Given two intersecting lines, two angles formed by the intersecting lines are adjacent if they are on the same side of one of the lines.

Adjacent Arcs

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Manipulative 3: Adjacent arcs. Click on the blue points and drag them to change the figure.

Two arcs of the same curve are adjacent if they share an endpoint.

Cite this article as:


Adjacent. 2010-10-12. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/a/adjacent.html.

Translations

Image Credits

Revision History


2010-10-12: Added "Adjacent angles on intersecting lines" and "adjacent arcs" (McAdams, David.)
2009-12-24: Added "References" (McAdams, David.)
2007-07-12: Initial version (McAdams, David.)

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