[009 미술관 정리] 격자대학교 수학과

\begin{tikzpicture}
  \fill [color=green!50!black] (0,0) rectangle (6,6);
  \filldraw [fill=white,line join=rounded] (0,4) --(1.3,5)--(0.8,5)--(2.3,6)--(1.8,4.6)--(6,4.6)--(3.8,2.7)--(5.6,0)--cycle;
  \filldraw [fill=green!50!black,line join=rounded] (2,3) --(2.6,4.4)--(4,3.8)--(3.4,2.3)--cycle;

\end{tikzpicture}