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#77 Re: Help Me ! » Geometry Proof-HELP ASAP!! » 2016-05-19 09:33:12

i still cant seem to get Q3 part b.
I created tons of inequalities and put them in terms of other lines.
Then I added some of the inequalities together and I couldn't get the rest

#78 Re: Help Me ! » HELP with 3 questions » 2016-05-19 09:31:18

i still cant seem to get Q3 part b.
I created tons of inequalities and put them in terms of other lines.
Then I added some of the inequalities together and I couldn't get the rest

#79 Re: Help Me ! » Geometry Proof-HELP ASAP!! » 2016-05-18 08:54:29

would we need to use median ratios?

#80 Help Me ! » Geometry Proof-HELP ASAP!! » 2016-05-17 12:55:40

dazzle1230
Replies: 11

In triangle ABC, the medians AD,BE, and CF concur at the 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.

Please help asap!  Include solution too. Thank you!

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