\input{preamble-standalone.ltx} \begin{document} % Ex. No. 116 (Section 16.0.1 : Option \tkzname{medial} or \tkzname{centroid} ) \begin{tikzpicture}[rotate=90,scale=.75] \tkzDefPoints{0/0/A,6/0/B,0.8/4/C} \tkzDefTriangleCenter[centroid](A,B,C) \tkzGetPoint{M} \tkzDefSpcTriangle[medial,name=M](A,B,C){_A,_B,_C} \tkzDrawPolygon[color=blue](A,B,C) \tkzDrawSegments[dashed,red](A,M_A B,M_B C,M_C) \tkzDrawPolygon[color=red](M_A,M_B,M_C) \tkzDrawPoints(A,B,C,M) \tkzDrawPoints[red](M_A,M_B,M_C) \tkzAutoLabelPoints[center=M,font=\scriptsize]% (A,B,C,M_A,M_B,M_C) \tkzLabelPoints[font=\scriptsize](M) \end{tikzpicture} \end{document}