\input{preamble-standalone.ltx} \begin{document} % Ex. No. 99 (Section 17.0.2 : Option : "in" ou "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](Ia,Ib,Ic) \tkzDrawPoints(A,B,C,I,Ia,Ib,Ic) \tkzDrawCircle[in](A,B,C) \tkzDrawSegments[dashed](A,Ia B,Ib C,Ic) \tkzAutoLabelPoints[center=I,blue,font=\scriptsize]% (Ia,Ib,Ic) \tkzAutoLabelPoints[center=I,red,font=\scriptsize]% (A,B,C) (A,B,C,Ia,Ib,Ic) \end{tikzpicture} \end{document}