\input{preamble-standalone.ltx} \begin{document} % Ex. No. 70 (Section 13.1.3 : An envelope) \begin{tikzpicture}[scale=1] \tkzInit[xmin=-6,ymin=-6,xmax=6,ymax=6] \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= 4 and 4](tkzFirstPointResult,tkzSecondPointResult)} \end{tikzpicture} \end{document}