Pronunciation: /ˈmɪdˌsɛg.mənt/ Explain

A midsegment of a triangle is a line segment joining the midpoints of two of sides of the triangle. Since every triangle has three sides, each triangle has three midsegments. A midsegment is parallel to the third side, and is half the length of the third side.

Click on the blue points and drag them to change the figure. Check the checkboxes to see the midsegments.

Under what conditions is the length of a midsegment zero?
Manipulative 1 - Midsegment of a Triangle Created with GeoGebra.


  1. McAdams, David E.. All Math Words Dictionary, midsegment. 2nd Classroom edition 20150108-4799968. pg 117. Life is a Story Problem LLC. January 8, 2015. Buy the book

Cite this article as:

McAdams, David E. Midsegment. 12/21/2018. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/m/midsegment.html.

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Revision History

12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
9/3/2018: Initial version. (McAdams, David E.)

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