The document is about 3D shapes and includes descriptions of a cuboid, cube, and sphere. It defines 3D shapes as objects that occupy space and have three dimensions of length, breadth, and height. Cuboids and cubes are made of polygonal faces that meet at edges, which meet at vertices. Cuboids have six rectangular faces, twelve edges, and eight vertices. Cubes are a special type of cuboid with all edges equal and six square faces. Spheres have a single curved face and no edges or vertices.