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

% Ex. No. 92 (Section 13.1.4 : Medians in a triangle)

\begin{tikzpicture}[scale=1.25]
  \tkzDefPoint(0,0){A} \tkzDefPoint(4,0){B}
  \tkzDefPoint(1,3){C} \tkzDrawPolygon(A,B,C)
  \tkzSetUpLine[color=blue]
  \tkzDrawLine[median](B,C,A)
  \tkzDrawLine[median](C,A,B)
  \tkzDrawLine[median](A,B,C)
\end{tikzpicture}

\end{document}