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\input{preamble-standalone.ltx}
\begin{document}

% Ex. No. 83 (Section 12.1.5 : A parabola)

\begin{tikzpicture}[scale=.75]
 \tkzInit[xmin=-6,ymin=-4,xmax=6,ymax=6]
 \tkzClip
 \tkzDefPoint(0,0){O}
 \tkzDefPoint(132:5){A}
 \tkzDefPoint(4,0){B}
 \foreach \ang in {5,10,...,360}{%
  \tkzDefPoint(\ang:4){M}
  \tkzDefLine[mediator](A,M)
  \tkzDrawLine[color=magenta,add= 3 and 3](tkzFirstPointResult,tkzSecondPointResult)}
\end{tikzpicture}

\end{document}