A soccer ball is in the shape of a truncated icosahedron. These shapes are all examples of polyhedra. A three-dimensional shape whose faces are polygons is known as a polyhedron.

A few examples of 2D shapes are rectangle, square, circle, triangle, or any other polygon. A few examples of 3D shapes are cuboid, cube, sphere, cone, prism, cylinder, pyramid, etc. Usually 2d figures have a total of two dimensions.