Pronunciation: /ˈeɪ pɛks/ ?

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Manipulative 1: Apex of a cone. Created with GeoGebra.

An apex is a the vertex at the tip of a cone or pyramid.[1] More generally, it is the highest point of an object. Click on the blue point in manipulative 1 and drag it to change the figure. Click on the GeoGebra reset button reset button to return the manipulative to its original configuration.


  1. Keller, Samuel Smith. Mathematics for Engineering Students, Plane and Solid Geometry, pg 166. D. Van Nostrand Company, 1908. (Accessed: 2010-01-02). http://www.archive.org/stream/mathengineer00kellrich#page/166/mode/1up/search/apex.
  2. apex. http://wordnet.princeton.edu/. WordNet. Princeton University. (Accessed: 2011-01-08). http://wordnetweb.princeton.edu/perl/webwn?s=apex&sub=Search+WordNet&o2=&o0=1&o7=&o5=&o1=1&o6=&o4=&o3=&h=.

Cite this article as:

Apex. 2009-12-31. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/a/apex.html.


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Revision History

2009-12-31: Added "References" (McAdams, David.)
2008-11-20: Initial version (McAdams, David.)

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