\input{preamble-standalone.ltx} \begin{document} % Ex. No. 56 (Section 8.2 : Placing a label with the library \tkzname{quotes}) \begin{tikzpicture}[trim left=-1cm] \tkzDefPoint["-60:$A_n$" ](2,3){A} \tkzDefPoint[shift={(2,3)},% "$B_n$" above left](31:3){B} \tkzDefPoint[shift={(2,3)},% "$C_n$" above right](158:3){C} \tkzDrawSegments[color=red,% line width=1pt](A,B A,C) \tkzDrawPoints[color=red](A,B,C) \end{tikzpicture} \end{document}