\begin{tikzpicture} \tikzset{point style/.style={% draw = blue, inner sep = 0pt, shape = circle, minimum size = 6pt, fill = red!20}} \tkzDefPoint(1,3){A} \tkzDefPoint(4,1){B} \tkzDefPoint(0,0){O} \tkzDrawPoint(A) \tkzDrawPoint(B) \tkzDrawPoint(O) \end{tikzpicture}