If any nocturnal angels that coincidentally know how to do geo would like to help me with this very hard geometry problem it would be great.

I guess we have something like this situation  (??? )

                    A

R                 D                      W

R = ( -x , - 3  )       W  =  ( 6, x - 3)

Midpoint of RW  =    ( (6 - x) / 2  ,  ( x - 3 - 3) / 2 ]   =  [ (6 - x) / 2 , (x - 6) / 2 ]

So,...since  D  = ( 2 , x)  = the midpoint

We have

(6 - x) / 2  = 2  ⇒   6 - x  = 4  ⇒  x = 2         

So...R = ( -2, - 3)

And

(x - 6) / 2   =  x  ⇒  x - 6  =  2x  ⇒  -6 = x   ⇒  x = - 6  

So....W  =  ( 6, - 9)

So   R =  ( -2, -3)     W  =  ( 6, -9)    and  D  =  (2, - 6)