\input{preamble-standalone.ltx}
\begin{document}

% Ex. No. 45 (Section  7.0.2 : Example of point drawings)

\begin{tikzpicture}[scale=.5]
   \tkzDefPoint(1,3){A}
   \tkzDefPoint(4,1){B}
   \tkzDefPoint(0,0){O}
   \tkzDrawPoint[color=red](A)
   \tkzDrawPoint[fill=blue!20,draw=blue](B)
   \tkzDrawPoint[color=green](O)
\end{tikzpicture}

\end{document}