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

% Ex. No. 12 (Section  4.1.1 : Cartesian coordinates )

   \begin{tikzpicture}
   \tkzInit[xmax=5,ymax=5]
   \tkzDefPoint(0,0){A}
   \tkzDefPoint(4,0){B}
   \tkzDefPoint(0,3){C}
   \tkzDrawPolygon(A,B,C)
   \tkzDrawPoints(A,B,C)
\end{tikzpicture}

\end{document}
