製作一個循環而不是路徑

Question

如何獲得一個帶有邊緣的節點，該節點循環到同一節點，但作為邊緣而不是路徑（即沒有箭頭}

這是我目前的程式碼：

\begin{tikzpicture}
   [node distance = 20mm and 20mm,
   main/.style = {draw, circle}] 
   
   every edge quotes/.style = {auto, font=\footnotesize}
   
    \node[main] ({9})                                       {$v_1$}; 
    \node[main] ({10}) [below right of = {9}]               {$v_2$};
    \node[main] ({11}) [below of = {10}]                    {$v_3$};
    \node[main] ({13}) [below left of = {9}]                {$v_4$};
    \node[main] ({12}) [below of = {13}]                    {$v_5$};
    
    \draw ({9}) edge[""] ({10});
    \draw ({10}) edge[""] ({11});
    \draw ({11}) edge[""] ({12});
    \draw ({12}) edge[""] ({13});
    \draw ({9}) edge[""] ({13});
    \draw ({9}) edge[""] ({11});
    \draw ({9}) edge[""] ({12});
    \draw ({10}) edge[""] ({12});
    \draw ({10}) edge[""] ({13});
    \draw ({11}) edge[""] ({13});
    \draw ({1}) edge [loop above] [""] (1);

嘗試製作一個頂部頂點有循環的五位圖，但使用此程式碼，循環是一條路徑（有一個箭頭}

謝謝