\begin{tikzpicture}[scale=.5] \tkzDefPoints{0/0/A,6/0/B,4/6/C} \tkzDefSpcTriangle[centroid](A,B,C){Ma,Mb,Mc} \tkzDefSpcTriangle[ex](A,B,C){Ja,Jb,Jc} \tkzDefSpcTriangle[extouch](A,B,C){Ta,Tb,Tc} \tkzDefTriangleCenter[mittenpunkt](A,B,C) \tkzGetPoint{Mi} \tkzDrawPoints(Ma,Mb,Mc,Ja,Jb,Jc) \tkzClipBB \tkzDrawPolygon[](A,B,C) \tkzDrawLines[add=0 and 1](Ja,Ma Jb,Mb Jc,Mc) \tkzDrawLines[add=1 and 1](A,B A,C B,C) \tkzDrawCircles[dashed](Ja,Ta Jb,Tb Jc,Tc) \tkzDrawPoints(B,C,A,Mi) \tkzLabelPoints(B,C,A,Mi) \tkzLabelPoints[left](Mb) \tkzLabelPoints(Ma,Mc,Jb,Jc) \tkzLabelPoints[above left](Ja,Jc) \tkzShowBB \end{tikzpicture}