Help me with this,.,.please

Given a triangle with vertices at A,B,C, show that the point R = 1/3 (A+B+C) lies on each of the medians. thnx

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- Jun 23rd 2011, 05:38 AMaldrincabreraTriangle Problem
Help me with this,.,.please

Given a triangle with vertices at A,B,C, show that the point R = 1/3 (A+B+C) lies on each of the medians. thnx - Jun 23rd 2011, 07:00 AMSudharakaRe: Triangle Problem
- Jun 23rd 2011, 07:03 AMaldrincabreraRe: Triangle Problem
.,.ammm.,.i'm a bit confused.,.,can u show me just the beginning of the step???thnx.,.,

- Jun 23rd 2011, 07:19 AMSudharakaRe: Triangle Problem
Refer to the figure that I have attached. Take the median drawn from the point A as AD. Let $\displaystyle (x_a,y_a),(x_b,y_b)\mbox{ and }(x_c,y_c),$ be the coordinates of the vertices A,B and C respectively. Find the coordinates of D and then find the coordinates of E. I am sure you will be able to do this now.

- Jun 23rd 2011, 07:27 AMaldrincabreraRe: Triangle Problem
,.,.thank u so much sir,.,.this really helped me a lot