Pronunciation: /ˈeɪ.pɛks/ Explain

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

Manipulative 1 - Apex of a Cone Created with GeoGebra.

An apex is a the vertex at the tip of a cone or pyramid.[2] More generally, it is the highest point of an object when that object comes to a point.


  1. McAdams, David E.. All Math Words Dictionary, apex. 2nd Classroom edition 20150108-4799968. pg 17. Life is a Story Problem LLC. January 8, 2015. Buy the book
  2. Keller, Samuel Smith. Mathematics for Engineering Students, Plane and Solid Geometry. pg 166. www.archive.org. D. Van Nostrand Company. 1908. Last Accessed 6/12/2018. http://www.archive.org/stream/mathengineer00kellrich#page/166/mode/1up/search/apex. Buy the book

Cite this article as:

McAdams, David E. Apex. 12/21/2018. All Math Words Encyclopedia. Life is a Story Problem LLC. https://www.allmathwords.org/en/a/apex.html.

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Revision History

12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
6/14/2018: Removed broken links, changed Geogebra links to work with Geogebra 5, updated license, implemented new markup. (McAdams, David E.)
12/31/2009: Added "References". (McAdams, David E.)
11/20/2008: Initial version. (McAdams, David E.)

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