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

% Ex. No. 208 (Section 25.1 : Duplicate a segment)

\begin{tikzpicture}
   \tkzDefPoint(0,0){A}
   \tkzDefPoint(2,-3){B}
   \tkzDefPoint(2,5){C}
   \tkzDrawSegments[red](A,B A,C)
   \tkzDuplicateSegment(A,B)(A,C)
   \tkzGetPoint{D}
   \tkzDrawSegment[green](A,D)
   \tkzDrawPoints[color=red](A,B,C,D)
   \tkzLabelPoints[above right=3pt](A,B,C,D)
\end{tikzpicture}

\end{document}