\input{preamble-standalone.ltx}
\begin{document}

% Ex. No. 100 (Section 17.0.3 : Option : "ex" ou "Excentral")

\begin{tikzpicture}[scale=.6]
 \tkzDefPoints{0/0/A,6/0/B,0.8/4/C}
 \tkzDefSpcTriangle[excentral,name=J](A,B,C){a,b,c}
 \tkzDefSpcTriangle[extouch,name=T](A,B,C){a,b,c}
 \tkzDrawPolygon[blue](A,B,C)
 \tkzDrawPolygon[red](Ja,Jb,Jc)
 \tkzDrawPoints(A,B,C)
 \tkzDrawPoints[red](Ja,Jb,Jc)
 \tkzLabelPoints(A,B,C)
 \tkzLabelPoints[red](Jb,Jc)
 \tkzLabelPoints[red,above](Ja)
 \tkzClipBB \tkzShowBB
 \tkzDrawCircles[gray](Ja,Ta Jb,Tb Jc,Tc)
\end{tikzpicture}

\end{document}
