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+\input{preamble-standalone.ltx}
+\begin{document}
+
+% Ex. No. 146 (Section 18.1.7 : Circles exinscribed to a given triangle option \tkzname{ex})
+
+\begin{tikzpicture}[scale=.6]
+ \tkzDefPoint(0,0){A}
+ \tkzDefPoint(3,0){B}
+ \tkzDefPoint(1,2.5){C}
+ \tkzDefCircle[ex](A,B,C) \tkzGetPoint{I}
+ \tkzGetLength{rI}
+ \tkzDefCircle[ex](C,A,B) \tkzGetPoint{J}
+ \tkzGetLength{rJ}
+ \tkzDefCircle[ex](B,C,A) \tkzGetPoint{K}
+ \tkzGetLength{rK}
+ \tkzDefCircle[in](B,C,A) \tkzGetPoint{O}
+ \tkzGetLength{rO}
+ \tkzDrawLines[add=1.5 and 1.5](A,B A,C B,C)
+ \tkzDrawPoints(I,J,K)
+ \tkzDrawPolygon(A,B,C)
+ \tkzDrawPolygon[dashed](I,J,K)
+ \tkzDrawCircle[R,blue!50!black](O,\rO)
+ \tkzDrawSegments[dashed](A,K B,J C,I)
+ \tkzDrawPoints(A,B,C)
+ \tkzDrawCircles[R](J,{\rJ} I,{\rI} K,{\rK})
+ \tkzLabelPoints(A,B,C,I,J,K)
+\end{tikzpicture}
+
+\end{document} \ No newline at end of file