\input{preamble-standalone.ltx} \begin{document} % Ex. No. 82 (Section 12.1.4 : An envelope) \begin{tikzpicture}[scale=.75] \tkzInit[xmin=-6,ymin=-4,xmax=6,ymax=6] % necessary \tkzClip \tkzDefPoint(0,0){O} \tkzDefPoint(132:4){A} \tkzDefPoint(5,0){B} \foreach \ang in {5,10,...,360}{% \tkzDefPoint(\ang:5){M} \tkzDefLine[mediator](A,M) \tkzDrawLine[color=magenta,add= 3 and 3](tkzFirstPointResult,tkzSecondPointResult)} \end{tikzpicture} \end{document}