vector problem for the best only

[hacen]

ps : sorry for my english ; i don't speak english very well, it obvious

.So sorry

 

[DrPhil]

View attachment 3011
ps : sorry for my english ; i don't speak english very well, it obvious

.So sorry

We need to see more of your work - what have you tried to do?

I might start by taking line BC to be the x-axis, and then ask how the y-components of the other points compare. To make the numbers integers, let the distance of A above BC be 12 u. Then the y-components are:
A_y = 12 u
E_y = 4 u
D_y = 3 u
G_y is half of E_y, so G_y = 2 u
Note that G is 2/3 as high as D, and also G is 1/6 as high as A

Maybe you could do the same operation using line BA as the base, and a different size unit v such that the distance of C from the line is 20 v. Find the relative distances from that line. Maybe even do it again with AC as the base?

Let us know how far you get. If you have trouble translating some words to English, tell us also in your own language.

 

[hacen]

thanks , i have solved befor .i just put it in the forum for be a puzzle for the members that all ,