Altitude of a Right Triangle Forms Similar Triangles

Check the boxes to show the similar triangles. Move the point on the slider to animate the triangles to demonstrate similar triangles. Move the points A, B, and C to change the size of the triangle ABC.

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Jerel Welker
Lincoln Southwest HS
Lincoln, NE
jwelker@lps.org

Jerel Welker, November 26, 2009, Created with GeoGebra