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+\input{preamble-standalone.ltx}
+\begin{document}
+
+% Ex. No. 117 (Section 16.0.2 : Option \tkzname{in} or \tkzname{incentral} )
+
+\begin{tikzpicture}[scale=1]
+ \tkzDefPoints{ 0/0/A,5/0/B,1/3/C}
+ \tkzDefSpcTriangle[in,name=I](A,B,C){_a,_b,_c}
+ \tkzInCenter(A,B,C)\tkzGetPoint{I}
+ \tkzDrawPolygon[red](A,B,C)
+ \tkzDrawPolygon[blue](I_a,I_b,I_c)
+ \tkzDrawPoints(A,B,C,I,I_a,I_b,I_c)
+ \tkzDrawCircle[in](A,B,C)
+ \tkzDrawSegments[dashed](A,I_a B,I_b C,I_c)
+ \tkzAutoLabelPoints[center=I,
+ blue,font=\scriptsize](I_a,I_b,I_c)
+ \tkzAutoLabelPoints[center=I,red,
+ font=\scriptsize](A,B,C,I_a,I_b,I_c)
+\end{tikzpicture}
+
+\end{document} \ No newline at end of file