]]>http://www.mathisfunforum.com/profile.php?id=676942017-05-17T07:39:40Zhttp://www.mathisfunforum.com/viewtopic.php?pid=399417#p399417In triangle ABC, the medians AD,BE, and CF concur at centroid G. (a) Prove that AD < (AB + AC)/2.
(b) Let P=AB+AC+BC be the perimeter of triangle ABC. Prove that 3P/4 < +AD+BE+CF < P