north west lines
\usetikzlibrary{patterns}
\begin{tikzpicture} \draw[pattern=north west lines] (0,0) rectangle (3,4); \end{tikzpicture}
\usetikzlibrary{patterns}
\begin{tikzpicture} \draw[pattern=north west lines] (0,0) rectangle (3,4); \end{tikzpicture}