Question

Vector
http://prntscr.com/lki53b

Answer 1

(2) Obtain the equations for the four lines containing AE, DE, CE and BE.

Answer 2

I wouldn't really know how to do this using vectors >> but since we determined point E you could just apply the slope formula between points A and E, then the intercept, then repeat the process for the other points

Answer 3

I was thinking of using parametric eqn and symmetric eqn

Answer 4

I don't remember how to do that sorry ;;

Answer 5

It's okay,voca
Thanks for trying to help! ^