Half Plane

Pronunciation: /hæf pleɪn/ Explain
A slanted line going from top to bottom. The area on the right side of the line is shaded. There a three arrows pointing from the line in various directions to the right.
Image 1: A half-plane.

A half-plane is a part of a plane on one side of a line. The line is a boundary of the half-plane.


  1. McAdams, David E.. All Math Words Dictionary, half-plane. 2nd Classroom edition 20150108-4799968. pg 89. Life is a Story Problem LLC. January 8, 2015. Buy the book

Cite this article as:

McAdams, David E. Half Plane. 12/21/2018. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/h/halfplane.html.

Image Credits

Revision History

12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
7/16/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra protocol. (McAdams, David E.)
5/5/2011: Initial version. (McAdams, David E.)

All Math Words Encyclopedia is a service of Life is a Story Problem LLC.
Copyright © 2018 Life is a Story Problem LLC. All rights reserved.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License