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\input{preamble-standalone.ltx}
\begin{document}
% Ex. No. 111 (Section 18.3.3 : Construction of the golden rectangle )
\begin{tikzpicture}[scale=.5]
\tkzInit[xmax=14,ymax=10]
\tkzClip[space=1]
\tkzDefPoint(0,0){A}
\tkzDefPoint(8,0){B}
\tkzDefMidPoint(A,B)\tkzGetPoint{I}
\tkzDefSquare(A,B)\tkzGetPoints{C}{D}
\tkzDrawSquare(A,B)
\tkzInterLC(A,B)(I,C)\tkzGetPoints{G}{E}
\tkzDrawArc[style=dashed,color=gray](I,E)(D)
\tkzDefPointWith[colinear= at C](E,B)
\tkzGetPoint{F}
\tkzDrawPoints(C,D,E,F)
\tkzLabelPoints(A,B,C,D,E,F)
\tkzDrawSegments[style=dashed,color=gray]%
(E,F C,F B,E)
\end{tikzpicture}
\end{document}
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