\input{preamble-standalone.ltx} \begin{document} % Ex. No. 209 (Section 25.1.1 : Proportion of gold with \tkzcname{tkzDuplicateSegment}) \begin{tikzpicture}[rotate=-90,scale=.75] \tkzDefPoint(0,0){A} \tkzDefPoint(10,0){B} \tkzDefMidPoint(A,B) \tkzGetPoint{I} \tkzDefPointWith[orthogonal,K=-.75](B,A) \tkzGetPoint{C} \tkzInterLC(B,C)(B,I) \tkzGetSecondPoint{D} \tkzDuplicateSegment(B,D)(D,A) \tkzGetPoint{E} \tkzInterLC(A,B)(A,E) \tkzGetPoints{N}{M} \tkzDrawArc[orange,delta=10](D,E)(B) \tkzDrawArc[orange,delta=10](A,M)(E) \tkzDrawLines(A,B B,C A,D) \tkzDrawArc[orange,delta=10](B,D)(I) \tkzDrawPoints(A,B,D,C,M,I,N) \tkzLabelPoints(A,B,D,C,M,I,N) \end{tikzpicture} \end{document}