Koda

*** QuickLaTeX cannot compile formula:
\begin{tikzpicture}[scale=1]
\begin{tikzpicture}[]
\foreach \z in {3,2,1,0}
{
\foreach \x in {2,4,6,8,10}
\foreach \y in {2,4,6,8,10}
\draw [fill=red,opacity=1](\x+\z,\y+\z) circle(1cm);
\foreach \x in {3,5,7,9}
\foreach \y in {3,5,7,9}
\draw [fill=blue](\x,\y) circle(0.41cm);
}
\end{tikzpicture}

*** Error message:
Environment tikzpicture undefined.
leading text: \begin{tikzpicture}


pa nam da naslednjo grafiko