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Tool: Medians of a Triangle - Math Open Reference:
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A web page and interactive applet illustrating the medians of a triangle.

The applet shows a triangle where the user can drag the vertices to reshape it. As the triangle is being reshaped, the user can see the three median lines tracking the changes, and observe that that all three always intersect at a point inside the triangle.

The page text explains that this point of intersection is also the centroid of the triangle, and explains how to determine the location of the medians.

Applet can be enlarged to full screen size for use with a classroom projector.After use in the classroom, student can access it again from any web browser at home or in the library with no login required.

This resource is a component of the Math Open Reference Interactive Geometry textbook project at

Technology Type: Java Applet 
Author: John Page
Language: English 
Cost: Does not require payment for use

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Courses: Geometry Triangles