\input{preamble-standalone.ltx} \begin{document} % Ex. No. 112 (Section 15.2.2 : Option \tkzname{school}) \begin{tikzpicture} \tkzDefPoint(0,0){A} \tkzDefPoint(4,0){B} \tkzDrawTriangle[school,fill=red!30](A,B) \tkzMarkRightAngles(tkzPointResult,B,A) \end{tikzpicture} \end{document}