Compound of four cubes

The term "compound of four cubes" refers to a three-dimensional geometric shape constructed by combining four individual cubes in a specific arrangement. This shape can be visualized as each of the four cubes sharing faces with the others, creating a single cohesive structure. One common arrangement for the compound of four cubes is to place the cubes so that they form the shape of a larger cube (specifically, a 2x2x2 cube) when viewed from a certain angle.