20 lines
459 B
TeX
20 lines
459 B
TeX
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\newcommand{\arrow}[2]{\path [-{Latex[scale=1]}] (#1) edge (#2);}
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\begin{tikzpicture}
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\begin{scope}[every node/.style={shape=circle, fill=white, draw, inner sep=2pt}]
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\node (A) at (0,2.0) {$A$};
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\node (B) at (-2.0,0.0) {$B$};
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\node (C) at (-0.0,-2.0) {$C$};
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\node (D) at (2.0,-0.0) {$D$};
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\end{scope}
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\begin{scope}[every draw/.style={}]
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\draw (A) -- (B);
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\draw (A) -- (C);
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\draw (B) -- (D);
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\draw (C) -- (D);
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\end{scope}
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\end{tikzpicture}
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