\input{preamble-standalone.ltx} \begin{document} % Ex. No. 115 (Section 15.2.5 : Option \tkzname{euclide}) \begin{tikzpicture}[scale=1] \tkzDefPoint(10,-5){K} \tkzDefPoint(13,-5){L} \tkzDrawTriangle[euclide,color=blue,fill=blue!10](K,L) \end{tikzpicture} \end{document}