Hi, i;m really stuck on my maths homework.

It's about congruency and stuff, but this is about proving that lines are the same?

Anyhoo, here's the question:

In the diagram, DX = XC, DV = ZC,and the lines AB and DC are parallel. Prove That:

a) AX = BX

b) AC = BD

c) triangles DBZ and CAV are congruent

my roughly drawn diagram to this question is here:

http://i825.photobucket.com/albums/z...ers3/maths.jpg

Please help i'm really stuck.

If you need help reading the diagram just ask me what the matter is.

Thankyou sooo much!!