\begin{tikzpicture} \clip(0,0) circle (2.3cm); \coordinate (p) at (10:1.5); \coordinate (q) at (10:4/1.5); \coordinate (s) at (40:1.1); \typeIIcline{p}{q}{s}; \tkzDefPoint(0,0){o} \tkzDefPoint(2,0){a} \tkzDrawCircle[dashed, color=blue](o,a) \tkzDrawPoints[fill=red](o,p,q,s) \tkzLabelPoints[below](p) \draw (50:1.2) node{\(q\)}; \draw (5:2.8) node{\(p^*\)}; \draw (1.3,-.6) node{\(C\)}; \end{tikzpicture}