A three-dimensional square is called a cube. A cube is defined as a solid object bounded by six equal square faces, with three of them meeting at each vertex.
The concept of a cube is crucial in geometry and various fields such as architecture, engineering, and computer graphics. Its defining characteristics include having 12 edges, 8 vertices, and 6 faces, all of which are squares. The cube is a regular hexahedron and is one of the five Platonic solids. Understanding cubes helps us grasp more complex three-dimensional shapes and their properties.