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\input{preamble-standalone.ltx}
\begin{document}
% Ex. No. 51 (Section 9.2.1 : Example of reflection (orthogonal symmetry))
\begin{tikzpicture}[scale=1]
\tkzDefPoints{1.5/-1.5/C,-4.5/2/D}
\tkzDefPoint(-4,-2){O}
\tkzDefPoint(-2,-2){A}
\foreach \i in {0,1,...,4}{%
\pgfmathparse{0+\i * 72}
\tkzDefPointBy[rotation=%
center O angle \pgfmathresult](A)
\tkzGetPoint{A\i}
\tkzDefPointBy[reflection = over C--D](A\i)
\tkzGetPoint{A\i'}}
\tkzDrawPolygon(A0, A2, A4, A1, A3)
\tkzDrawPolygon(A0', A2', A4', A1', A3')
\tkzDrawLine[add= .5 and .5](C,D)
\end{tikzpicture}
\end{document}
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