sentence: Cuboids have six faces, which form a convex polyhedron.
sentences_before: A 'cuboid' is a 3D shape.
sentences_after: Simply speaking, cuboids are made from 6 rectangles, which are placed at right angles. A cuboid that uses square faces is a cube, if the faces are rectangles, other than cubes, it looks like a shoe box.
concept_name: cuboid
headings: Cuboid
categories: Three-dimensional shapes