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 November 13th, 2010, 12:32 PM #1 Senior Member   Joined: Apr 2009 Posts: 106 Thanks: 0 Similar Triangles III Two medians of a triangle intersect at a point that divides each median into two segments with length ratio 2:1. Use this to prove that the three medians of a triangle are concurrent.
 November 13th, 2010, 10:05 PM #2 Senior Member   Joined: Apr 2008 Posts: 435 Thanks: 0 Re: Similar Triangles III I see you have posted three similar triangle problems. If you show your progress, I can help you along the way.
 November 14th, 2010, 07:51 AM #3 Global Moderator   Joined: Dec 2006 Posts: 19,722 Thanks: 1807 Assume the longer segments connect the medians' point of intersection to two vertices of the triangle.

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