Question

(vector proves) HOW TO DO THIS HELP PLZZZ http://puu.sh/4cDR1.png

Answer 1

Position C so that it lies on the origin, and the segment CB lies on the x-axis. Let the coordinates of A be \((a_1, a_2\)), and the coordinates of B \((b_1,0)\).
If we let D and E be the midpoints of CA and AB, respectively, what are the coordinates of D and E?

Answer 2

can you draw it please?

Answer 3

you have to prove using vectors

Answer 4

Well, the vector from P\((x_1,y_1)\) to Q\((x_2,y_2)\) is \(\vec{PQ}=\left<x_2-x_1,y_2-y_1\right>\), right?