资讯

Image caption, 3D shapes that are non-polyhedral include cylinders, cones ... Three square faces meet at a vertex. A prism has two end faces that match the cross-section, plus a rectangular ...
Properties of 3D shapes. 3D shapes have faces (sides), edges and vertices (corners). Faces. A face is a flat or curved surface on a 3D shape. For example a cube has six faces, a cylinder has three ...