\input{preamble-standalone.ltx} \begin{document} % Ex. No. 178 (Section 24.2 : \tkzcname{tkzDrawArc} et \tkzname{towards}) \begin{tikzpicture}[scale=1.5] \tkzDefPoint(0,0){O} \tkzDefPoint(2,-1){A} \tkzDefPoint(1,1){B} \tkzDrawArc[color=blue,->](O,A)(B) \tkzDrawArc[color=gray](O,B)(A) \tkzDrawArc(O,B)(A) \tkzDrawLines[add = 0 and .5](O,A O,B) \tkzDrawPoints(O,A,B) \tkzLabelPoints[below](O,A,B) \end{tikzpicture} \end{document}