\input{preamble-standalone.ltx} \begin{document} % Ex. No. 67 (Section 8.7.1 : Example with \tkzcname{tkzDefPoint} and \tkzcname{tkzDrawPoints} ) \begin{tikzpicture}[scale=.5] \tkzDefPoint(1,3){A} \tkzDefPoint(4,1){B} \tkzDefPoint(0,0){O} \tkzDrawPoints[size=8,color=red](A,B,O) \end{tikzpicture} \end{document}