16 lines
330 B
TeX
16 lines
330 B
TeX
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\begin{tikzpicture}
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\tikzset{every node/.style={shape=circle,draw,fill=white,inner sep=2pt}}
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\node (3) at (0, 0) {$3$};
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\node (4) at (1, 0) {$4$};
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\node (6) at (0, 1) {$6$};
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\node (12) at (0, 2) {$12$};
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\node (20) at (1, 1) {$20$};
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\draw (3) -- (6);
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\draw (4) -- (12);
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\draw (4) -- (20);
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\draw (6) -- (12);
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\end{tikzpicture}
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