Pronunciation: /ˈsɪm.ə.lər/ Explain

Two geometric shapes are similar if they have the same shape, but possibly different sizes.

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

The two triangles are always similar.
Manipulative 1 - Similar Triangles Created with GeoGebra.


  1. McAdams, David E.. All Math Words Dictionary, similar. 2nd Classroom edition 20150108-4799968. pg 165. Life is a Story Problem LLC. January 8, 2015. Buy the book

Cite this article as:

McAdams, David E. Similar. 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.)
12/6/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra app. (McAdams, David E.)
9/14/2008: Change image to manipulative. Expanded 'More Information' (McAdams, David E.)
7/12/2007: Initial version. (McAdams, David E.)

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