42. Exemplar Exercise Problem XXI

\(A \left(  6,1 \right)\), \(B \left(  8,2 \right)\) and \(C(9,4)\) are three vertices of a parallelogram \( ABCD\). If \(E\) is the midpoint of \(DC\). Find the coordinates of \(E\).

 

 

The coordinates of the point E is$\left(\begin{array}{lll}i& ,& \frac{i}{i}\end{array}\right)$.