Intersection (Geometry)

Pronunciation: /ˌɪn tərˈsɛk ʃən/ ?

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. intersection. Encyclopedia Britannica. (Accessed: 2009-03-12).
  2. Ray C. Jurgensen, Richard G. Brown, and John W. Jurgensen. Geometry, pg 6. Houghton Mifflin McDougal Littell, January 2000.

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Cite this article as:

Intersection (Geometry). 2010-02-23. All Math Words Encyclopedia. Life is a Story Problem LLC.


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Revision History

2010-02-23: Added "References" (McAdams, David.)
2008-10-11: Change definition from 'point' to 'points, added paragraph on conic sections (McAdams, David.)
2008-08-12: Added 'More Information' (McAdams, David.)
2007-08-18: Initial version (McAdams, David.)

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