\input{preamble-standalone.ltx} \begin{document} % Ex. No. 240 (Section 30.2.10 : Example 2: from Indonesia) \begin{tikzpicture}[pol/.style={fill=brown!40,opacity=.5}, seg/.style={tkzdotted,color=gray}, hidden pt/.style={fill=gray!40}, mra/.style={color=gray!70,tkzdotted,/tkzrightangle/size=.2}, scale=3] \tkzSetUpPoint[size=2] \tkzDefPoints{0/0/A,2.5/0/B,1.33/0.75/D,0/2.5/E,2.5/2.5/F} \tkzDefLine[parallel=through D](A,B) \tkzGetPoint{I1} \tkzDefLine[parallel=through B](A,D) \tkzGetPoint{I2} \tkzInterLL(D,I1)(B,I2) \tkzGetPoint{C} \tkzDefLine[parallel=through E](A,D) \tkzGetPoint{I3} \tkzDefLine[parallel=through D](A,E) \tkzGetPoint{I4} \tkzInterLL(E,I3)(D,I4) \tkzGetPoint{H} \tkzDefLine[parallel=through F](E,H) \tkzGetPoint{I5} \tkzDefLine[parallel=through H](E,F) \tkzGetPoint{I6} \tkzInterLL(F,I5)(H,I6) \tkzGetPoint{G} \tkzDefMidPoint(G,H) \tkzGetPoint{P} \tkzDefMidPoint(G,C) \tkzGetPoint{Q} \tkzDefMidPoint(B,C) \tkzGetPoint{R} \tkzDefMidPoint(A,B) \tkzGetPoint{S} \tkzDefMidPoint(A,E) \tkzGetPoint{T} \tkzDefMidPoint(E,H) \tkzGetPoint{U} \tkzDefMidPoint(A,D) \tkzGetPoint{M} \tkzDefMidPoint(D,C) \tkzGetPoint{N} \tkzInterLL(B,D)(S,R) \tkzGetPoint{L} \tkzInterLL(H,F)(U,P) \tkzGetPoint{K} \tkzDefLine[parallel=through K](D,H) \tkzGetPoint{I7} \tkzInterLL(K,I7)(B,D) \tkzGetPoint{O} \tkzFillPolygon[pol](P,Q,R,S,T,U) \tkzDrawSegments[seg](K,O K,L P,Q R,S T,U C,D H,D A,D M,N B,D) \tkzDrawSegments(E,H B,C G,F G,H G,C Q,R S,T U,P H,F) \tkzDrawPolygon(A,B,F,E) \tkzDrawPoints(A,B,C,E,F,G,H,P,Q,R,S,T,U,K) \tkzDrawPoints[hidden pt](M,N,O,D) \tkzMarkRightAngle[mra](L,O,K) \tkzMarkSegments[mark=|,size=1pt,thick,color=gray](A,S B,S B,R C,R Q,C Q,G G,P H,P E,U H,U E,T A,T) \tkzLabelAngle[pos=.3](K,L,O){$\alpha$} \tkzLabelPoints[below](O,A,S,B) \tkzLabelPoints[above](H,P,G) \tkzLabelPoints[left](T,E) \tkzLabelPoints[right](C,Q) \tkzLabelPoints[above left](U,D,M) \tkzLabelPoints[above right](L,N) \tkzLabelPoints[below right](F,R) \tkzLabelPoints[below left](K) \end{tikzpicture} \end{document}