\clearpage
\pagestyle{empty}
Zeichenhilfe:\\
    \begin{tikzpicture}[thin,scale=1]
            \draw[step=0.5cm,ultra thin,black!50!](-8,-8)grid(8,8);
            \draw[thick](0,-8)--(0,8)(-8,0)--(8,0);
            \fill[blue](0,0)circle(0.075cm);
        \foreach \r in {.25,.75,...,7.75}
            \draw[orange](0,0)circle(\r cm);
        \foreach \r in {.5,1.5,...,7.5}
            \draw[blue](0,0)circle(\r cm);
        \foreach \r in {1,3,...,7}
            \draw[red](0,0)circle(\r cm);
        \foreach \r in {2,4,...,8}
            \draw[red!50!blue](0,0)circle(\r cm);
        \foreach \w in {0,10,...,350}
            \draw[orange](\w:1)--(\w:8);
    \end{tikzpicture}