Linear Pair

Pronunciation: /ˈlɪn.i.ər pɛər/ Explain

A linear pair is a pair of angles formed by two intersecting lines that are adjacent. The sum of the measures of a linear pair of angles is always 180°, π rad.

Click on the blue points and drag them to change the figure.

When two lines intersect, how many linear pairs are there?
Manipulative 1 - Linear Pair Created with GeoGebra.


  1. McAdams, David E.. All Math Words Dictionary, linear pair. 2nd Classroom edition 20150108-4799968. pg 108. Life is a Story Problem LLC. January 8, 2015. Buy the book

Cite this article as:

McAdams, David E. Linear Pair. 4/24/2019. All Math Words Encyclopedia. Life is a Story Problem LLC.

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Revision History

4/24/2019: Changed equations and expressions to new format. (McAdams, David E.)
12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
8/31/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra protocol. (McAdams, David E.)
7/18/2018: Changed title to common format. (McAdams, David E.)
5/5/2011: Initial version. (McAdams, David E.)

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