\input{preamble-standalone.ltx} \begin{document} % Ex. No. 158 (Section 19.6.1 : Example) \begin{tikzpicture} \tkzDefPoint(0,0){O} \tkzDefPoint(2,0){N} \tkzDefPointBy[rotation=center O angle 50](N) \tkzGetPoint{M} \tkzDefPointBy[rotation=center O angle -20](N) \tkzGetPoint{P} \tkzDefPointBy[rotation=center O angle 125](N) \tkzGetPoint{P'} \tkzLabelCircle[above=4pt](O,N)(120){$\mathcal{C}$} \tkzDrawCircle(O,M) \tkzFillCircle[color=blue!20,opacity=.4](O,M) \tkzLabelCircle[R,draw,fill=orange,% text width=2cm,text centered](O,3 cm)(-60)% {The circle\\ $\mathcal{C}$} \tkzDrawPoints(M,P)\tkzLabelPoints[right](M,P) \end{tikzpicture} \end{document}