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- \begin{tikzpicture}
- \tikzstyle{point}=[thick,draw=black,cross out,inner sep=0pt,minimum width=4pt,minimum height=4pt]
- \begin{axis}[
- legend pos=south west,
- axis x line=middle,
- axis y line=middle,
- grid = major,
- width=5cm,
- height=5cm,
- grid style={dashed, gray!30},
- xmin=0, % start the diagram at this x-coordinate
- xmax=3, % end the diagram at this x-coordinate
- ymin=0, % start the diagram at this y-coordinate
- ymax=3, % end the diagram at this y-coordinate
- tick align=outside,
- minor tick num=-3,
- enlargelimits=true,
- tension=0.08]
- \node (a)[point,label={[label distance=0cm]5:$e_0$}] at (axis cs:2.5,0) {};
- \node (b)[point,label={[label distance=0cm]5:$e_1$}] at (axis cs:0,2.5) {};
- \node (c)[point,label={[label distance=0cm]0:$e_2$}] at (axis cs:2,2) {};
- \draw[thick,fill=orange!50] (a.center) -- (b.center) -- (c.center) -- cycle;
- \end{axis}
- \end{tikzpicture}
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