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+\input{preamble-standalone.ltx}
+\begin{document}
+
+% Ex. No. 121 (Section 16.0.6 : Option \tkzname{feuerbach})
+
+\begin{tikzpicture}[scale=1]
+ \tkzDefPoint(0,0){A}
+ \tkzDefPoint(3,0){B}
+ \tkzDefPoint(0.5,2.5){C}
+ \tkzDefCircle[euler](A,B,C) \tkzGetPoint{N}
+ \tkzDefSpcTriangle[feuerbach,
+ name=F](A,B,C){_a,_b,_c}
+ \tkzDefSpcTriangle[excentral,
+ name=J](A,B,C){_a,_b,_c}
+ \tkzDefSpcTriangle[extouch,
+ name=T](A,B,C){_a,_b,_c}
+ \tkzDrawPoints[blue](J_a,J_b,J_c,F_a,F_b,F_c,A,B,C)
+ \tkzClipBB \tkzShowBB
+ \tkzDrawCircle[purple](N,F_a)
+ \tkzDrawPolygon(A,B,C)
+ \tkzDrawPolygon[blue](F_a,F_b,F_c)
+ \tkzDrawCircles[gray](J_a,F_a J_b,F_b J_c,F_c)
+ \tkzAutoLabelPoints[center=N,dist=.3,
+ font=\scriptsize](A,B,C,F_a,F_b,F_c,J_a,J_b,J_c)
+\end{tikzpicture}
+
+\end{document} \ No newline at end of file