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.
 
The sides of the parallelogram:
 
\(AB =\) i.
 
\(BC =\) i.
 
\(CD =\) i.
 
\(AD =\) i.