How to find coordinates $(x,y) $ from distance rule

Question

I have 3 coordinates of parallelogram $A(3,\,2)\,, B(4,\,-5),\, C(0,\,-3)$ and $D(x,\,y)$

it's possible to get $x$ and $y$ (coordinate of $D$) from distance rule

Answer 1

1. way

Since the diagonal halves each other, the midpoint of each coincide:

$${A+C\over 2} = {B+D\over 2} \Longrightarrow D = A-B+C =(-1,4)$$

2. way

$$AB = CD\;\;\;{\rm and}\;\;\; AD = BC$$

.... But this is like taking something from the left pocket with right hand.