BBC2 个月
3d shapes
Learn about 3D shapes and their properties. Properties of 3D shapes Learn about faces, edges and vertices. What is volume? Find out how the volume of a 3D shape can be calculated by counting cubes.
Faces - A face is a flat surface on a 3D shape. For example a cube has 6 faces. Edges - An edge is where two faces meet. For example a cube has 12 edges. Vertices - A vertex is a corner where ...