\input{preamble-standalone.ltx} \begin{document} % Ex. No. 78 (Section 11.6 : Middle of a compass segment) \begin{tikzpicture}[scale=.75] \tkzDefPoint(0,0){A} \tkzDefRandPointOn[circle= center A radius 4cm] \tkzGetPoint{B} \tkzDrawPoints(A,B) \tkzDefPointBy[rotation= center A angle 180](B) \tkzGetPoint{C} \tkzInterCC[R](A,4 cm)(B,4 cm) \tkzGetPoints{I}{I'} \tkzInterCC[R](A,4 cm)(I,4 cm) \tkzGetPoints{J}{B} \tkzInterCC(B,A)(C,B) \tkzGetPoints{D}{E} \tkzInterCC(D,B)(E,B) \tkzGetPoints{M}{M'} \tikzset{arc/.style={color=brown,style=dashed,delta=10}} \tkzDrawArc[arc](C,D)(E) \tkzDrawArc[arc](B,E)(D) \tkzDrawCircle[color=brown,line width=.2pt](A,B) \tkzDrawArc[arc](D,B)(M) \tkzDrawArc[arc](E,M)(B) \tkzCompasss[color=red,style=solid](B,I I,J J,C) \tkzDrawPoints(B,C,D,E,M) \tkzLabelPoints(A,B,M) \end{tikzpicture} \end{document}