\begin{tikzpicture}
          \clip (0,0) circle (2.5cm);
          \tkzDefPoint(0,0){o}
          \tkzDefPoint(2,0){a}
          \tkzDefPoint(130:1.2){p}
          \tkzDefPoint(80:1.4){q}
          \tkzDefPoint(1.2,0){x}
          \tkzDefPoint(-2,0){b}
          \draw (b)--(a);
          \draw[very thick, color=blue](o)--(x);
          \tkzDrawCircle[dashed,color=blue](o,a)
          \tkzDefCircle[orthogonal through=p and q](o,a) \tkzGetPoint{c}
          \tkzInterCC(o,a)(c,p) \tkzGetPoints{v}{u}
          \tkzDrawArc(c,v)(u)
          \tkzDrawArc[very thick, color=blue](c,p)(q)
          \tkzDrawPoints[size=2,fill=red](o,p,q,x)
          \tkzDrawPoints[size=2,fill=white](u,v,b,a)
          \tkzLabelPoints[below](p,q,x)
          \tkzLabelPoint[below right=-3pt](a){\(1\)}
          \tkzLabelPoint[below](o){\(0\)}
          \tkzLabelPoint[above](u){\(u\)}
          \tkzLabelPoint[left](v){\(v\)}
          \tkzLabelPoint[below left=-3pt](b){\(-1\)}
          \draw (.4,.6) node{\(T\)};
          \draw[->] (-.08,.8)--(.4,.2);
\end{tikzpicture}