\input{preamble-standalone.ltx} \begin{document} % Ex. No. 244 (Section 31.1.2 : Example 2: change style of line) \begin{tikzpicture}[scale=.6] \tkzDefPoint(1,0){A} \tkzDefPoint(4,0){B} \tkzDefPoint(1,1){C} \tkzDefPoint(5,1){D} \tkzDefPoint(1,2){E} \tkzDefPoint(6,2){F} \tkzDefPoint(0,4){A'}\tkzDefPoint(3,4){B'} \tkzCalcLength[cm](C,D) \tkzGetLength{rCD} \tkzCalcLength[cm](E,F) \tkzGetLength{rEF} \tkzInterCC[R](A',\rCD cm)(B',\rEF cm) \tkzGetPoints{I}{J} \tkzSetUpLine[style=dashed,color=gray] \tkzDrawLine(A',B') \tkzCompass(A',B') \tkzDrawSegments(A,B C,D E,F) \tkzDrawCircle[R](A',\rCD cm) \tkzDrawCircle[R](B',\rEF cm) \tkzSetUpLine[color=red] \tkzDrawSegments(A',I B',I) \tkzDrawPoints(A,B,C,D,E,F,A',B',I,J) \tkzLabelPoints(A,B,C,D,E,F,A',B',I,J) \end{tikzpicture} \end{document}