7. Calculate the sides of the parallelogram

The points \(A(-16, 6)\), \(B(12, -2)\), \(C(12,-12)\) and \(D(-16,-4)\) in order are the vertices of a parallelogram. In the parallelogram, the opposite sides are equal. Calculate the side values of the parallelogram using the distance formula.

 

\(AB =\) $\sqrt{i}$.