The thermodynamic square can be used as a tool to recall and derive these relations.

The Thermodynamic square can also be used to find the Maxwell Relations.

The Thermodynamic square is mostly used to compute the derivative of any thermodynamic potential of interest.

The thermodynamic square (also known as the thermodynamic wheel, Guggenheim scheme or Born square) is a mnemonic diagram attributed to Max Born and used to help determine thermodynamic relations.