A cube is a three-dimensional solid bounded by six identical square faces. Every edge has the same length, every angle is 90°, and all faces are congruent. The cube is one of the five Platonic solids and the most common shape in daily life — dice, sugar cubes, ice cubes, and Rubik's Cubes are all cubes.
The cube is also called a regular hexahedron or a square prism with equal length, width, and height. When the side length is a, the cube has 12 edges of length a, 8 vertices, and 6 faces each with area a².