Intersection (Geometry)

Pronunciation: /ˌɪn.tərˈsɛk.ʃən/ Explain

Geometric figures that intersect (cross each other).
Figure 1: Intersections

In geometry, an intersection is a point or points at which two geometric figures coincide. Geometric figures coincide where they cross each other. In figure 1, the red points are the intersections. Conic sections are formed by intersecting a 2-dimensional plane with a 3-dimensional double cone.


  1. McAdams, David E.. All Math Words Dictionary, intersection. 2nd Classroom edition 20150108-4799968. pg 101. Life is a Story Problem LLC. January 8, 2015. Buy the book
  2. intersection. Encyclopedia Britannica. Merriam-Webster. Last Accessed 8/7/2018. Buy the book
  3. Ray C. Jurgensen, Richard G. Brown, and John W. Jurgensen. Geometry. pg 6. Houghton Mifflin McDougal Littell. January 2000. Last Accessed 8/7/2018. Buy the book

Cite this article as:

McAdams, David E. Intersection (Geometry). 12/21/2018. All Math Words Encyclopedia. Life is a Story Problem LLC.

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Revision History

12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
8/6/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra protocol. (McAdams, David E.)
2/23/2010: Added "References". (McAdams, David E.)
10/11/2008: Change definition from 'point' to 'points, added paragraph on conic sections. (McAdams, David E.)
8/12/2008: Added 'More Information'. (McAdams, David E.)
8/18/2007: Initial version. (McAdams, David E.)

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