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#1 2017-05-16 17:20:38

alext
Member
Registered: 2017-05-16
Posts: 1

Pls Help Ty

In 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

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#2 2017-05-16 19:39:40

bob bundy
Moderator
Registered: 2010-06-20
Posts: 7,979

Re: Pls Help Ty

hi alext

Welcome to the forum.

Your problem has been posted before (and answered). 

http://www.mathisfunforum.com/viewtopic.php?id=23062

Bob


Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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