\input{preamble-standalone.ltx} \begin{document} % Ex. No. 68 (Section 13.1.1 : Example with \tkzname{mediator}) \begin{tikzpicture}[rotate=25] \tkzInit \tkzDefPoints{-2/0/A,1/2/B} \tkzDefLine[mediator](A,B) \tkzGetPoints{C}{D} \tkzDefPointWith[linear,K=.75](C,D) \tkzGetPoint{D} \tkzDefMidPoint(A,B) \tkzGetPoint{I} \tkzFillPolygon[color=orange!30](A,C,B,D) \tkzDrawSegments(A,B C,D) \tkzMarkRightAngle(B,I,C) \tkzDrawSegments(D,B D,A) \tkzDrawSegments(C,B C,A) \end{tikzpicture} \end{document}