Faces - A face is a flat surface on a 3D shape ... 3D shapes, they have 3 dimensions. Length, width and depth. What would the 3D version of a square be? A cube. A cube has 6 square faces which ...

Stuart Clark: It’s so clearly obvious that the world isn’t flat. We see when ... is all constructed with this three dimensional world. And the pictures from space show our world as a globe ...