\input{preamble-standalone.ltx} \begin{document} % Ex. No. 6 (Section 1.3.1 : Example Part I: gold triangle) \begin{tikzpicture} \tkzDefPoint(0,0){C} \tkzDefPoint(4,0){D} \tkzDefSquare(C,D) \tkzGetPoints{e}{f} \tkzDefMidPoint(C,f) \tkzGetPoint{m} \tkzInterLC(C,f)(m,e) \tkzGetSecondPoint{n} \tkzInterCC[with nodes](C,C,n)(D,C,n) \tkzGetFirstPoint{B} \tkzInterLC(C,D)(D,B) \tkzGetSecondPoint{A} \tkzInterLC(B,A)(B,D) \tkzGetSecondPoint{E} \tkzInterLL(B,D)(C,E) \tkzGetPoint{F} \tkzDrawPoints(C,D,B) \tkzDrawPolygon(B,...,D) \tkzDrawPolygon(B,C,D) \tkzDrawSegments(D,A A,B C,E) \tkzDrawArc[delta=10](B,C)(E) \tkzDrawPoints(A,...,F) \tkzMarkRightAngle[fill=blue!20](B,F,C) \tkzFillAngles[fill=blue!10](C,B,D E,A,D) \tkzMarkAngles(C,B,D E,A,D) \tkzLabelAngles[pos=1.5](C,B,D E,A,D){$\alpha$} \tkzLabelPoints[below](A,C,D,E) \tkzLabelPoints[above right](B,F) \end{tikzpicture} \end{document}