I

want to prove that JM is parallel to KL.

2 answers

Ok, who is stopping you ?
Quadrilateral JKLM with points J(-9;1) K(-4;1) L(2;3) M(6;6) is given.

Questions.
(a) Prove that JM is parallel KM.
(b) Determine (by calculation) whether the diagonals JL and KM bisect each other.
(c) Prove that JKLM is an isosceles trapezium, by using the:
(1) diagonals
(2) sides