\input{preamble-standalone.ltx} \begin{document} % Ex. No. 90 (Section 13.1.2 : Example with \tkzcname{tkzDrawLines}) \begin{tikzpicture} \tkzDefPoint(0,0){A} \tkzDefPoint(2,0){B} \tkzDefPoint(1,2){C} \tkzDefPoint(3,2){D} \tkzDrawLines(A,B C,D A,C B,D) \tkzLabelPoints(A,B,C,D) \end{tikzpicture} \end{document}