Median of a Triangle

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What Is the Median of a Triangle?

Definition of Median

A median of a triangle is a segment that connects a vertex of the triangle to the midpoint of the opposite side. The applet below shows a median of triangle ABC. Drag any of the vertices to change the shape of the triangle.

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What Are Some of the Properties of the Median?

See how the three medians of a triangle are related to one another.
Find out what you can say about the sum of the lengths of the three medians of a triangle.

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Illuminations is a partnership between the National Council of Teachers of Mathematics and the MarcoPolo Education Foundation

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This page last updated: April 15, 2003

The mission of the National Council of Teachers of Mathematics is to provide the vision and leadership necessary to ensure a mathematics education of the highest quality for all students. The NCTM Illuminations Web site is devoted to providing Internet resources to improve the teaching and learning of mathematics in grades pre-K through 12. The views expressed or implied on this Web site, unless otherwise noted, should not be interpreted as official positions of the Council.