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@@ -24,12 +24,15 @@
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\draw (\x,0.1) -- (\x,-0.1) node [below] {\x};
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- \draw[red] (0.07,0.1) -- (0,0.1) -- (0,-0.1) -- (0.07,-0.1) node [below] {};
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- \draw[red] plot [smooth] coordinates{(0.47,0.1) (0.5,0) (0.47,-0.1)};
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+ \draw[thick,red] (0.07,0.1) -- (0,0.1) -- (0,-0.1) -- (0.07,-0.1) node [below] {};
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+ \draw[thick,red] plot [smooth] coordinates{(0.47,0.1) (0.5,0) (0.47,-0.1)};
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+ \draw[thick,red] (0,0) -- (0.5,0);
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+ \draw[dotted,red] (0,-0.03) -- (0.5,-0.03);
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\begin{scope}[shift={(4,0)}]
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\draw[thick] (0cm,0cm) circle(1cm);
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\draw[thick, red] ([shift={(180:1cm)}]-0.0,0) arc (180:0:1cm);
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+ \draw[red, dotted] ([shift={(180:0.97cm)}]-0.0,0) arc (180:0:0.97cm);
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\draw (0:1cm) node[point, label=right:{$0$}] {};
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\end{scope}
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