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

% Ex. No. 180 (Section 24.4 : \tkzcname{tkzDrawArc} et \tkzname{R})

\begin{tikzpicture}
  \tkzDefPoints{0/0/O}
  \tikzset{compass style/.append style={<->}}
  \tkzDrawArc[R,color=orange,double](O,3cm)(270,360)
  \tkzDrawArc[R,color=blue,double](O,2cm)(0,270)
  \tkzDrawPoint(O)
  \tkzLabelPoint[below](O){$O$}
\end{tikzpicture}

\end{document}
