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

% Ex. No. 22 (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}