\begin{tikzpicture}[scale=1] \tkzDefPoints{0/0/A,3/0/B,4/2/C} \tkzDefParallelogram(A,B,C) \tkzGetPoint{D} \tkzDrawPolygon(A,B,C,D) \tkzLabelPoints(A,B) \tkzLabelPoints[above right](C,D) \tkzDrawPoints(A,...,D) \end{tikzpicture}