\documentclass{standalone} %\usepackage{pgfplots} \usepackage{tikz} \title{Hutton's formula} \begin{document} \begin{tikzpicture} \draw[help lines, color=gray!30, dashed] (0,0) grid (7,5); \draw[-,fill=gray, opacity=0.5] (0,0) -- (7,0) -- (7,1) -- (0,0); \draw[-,fill=gray!50!white, opacity=0.5] (0,0) -- (7,1) -- (6,3) -- (0,0); \draw[-,fill=gray!50!white, opacity=0.5] (0,0) -- (6,3) -- (5,5) -- (0,0); \draw[-,thick] (0,0) -- (5,0) -- (5,5) -- (0,0); \draw[rotate=-45] (0,1) arc (90:45:1); \draw[-] (6.8,0) -- (6.8,0.2) -- (7,0.2); \draw[-] (4.8,0) -- (4.8,0.2) -- (5,0.2); \coordinate(A) at (6,3); \draw[-,rotate around={118:(A)}] (5.8,3) -- (5.8,3.2) -- (6.2,3.2) -- (6.2,3); \end{tikzpicture} \end{document}