\documentclass{article} 
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
%\fill[yellow] (6,6) circle (40mm);
\fill[] (8,8) circle (2mm);
\fill[] (4,8) circle (2mm);
\fill[] (8,10) circle (2mm);
\fill[] (8,6) circle (2mm);
\fill[] (10,8) circle (2mm);
\fill[] (4,10) circle (2mm);
\fill[] (4,6) circle (2mm);
\draw (8,8)--(4,8);
\draw (4,8)--(4,10);
\draw (4,8)--(4,6);
\draw (8,8)--(8,10);
\draw (8,8)--(10,8);
\draw (8,8)--(8,6);





 % \draw[fill=red!30] (5,5) arc (180:360:0.75cm); 
\end{tikzpicture}
\end{document}