\input{preamble-standalone.ltx} \begin{document} % Ex. No. 38 (Section 6.1.3 : Option \tkzname{circum}) \begin{tikzpicture} \tkzDefPoints{0/1/A,3/2/B,1/4/C} \tkzDefTriangleCenter[circum](A,B,C) \tkzGetPoint{G} \tkzDrawPolygon[color=brown](A,B,C) \tkzDrawCircle(G,A) \tkzDrawPoints(A,B,C,G) \end{tikzpicture} \end{document}