BEIJING -- Chinese scientists have recently succeeded in creating single-atom-layer metals with a thickness of just one ...

3D shapes have different properties to 2D shapes. Faces - A face is a flat surface on a 3D shape. Edges - An edge is where two faces meet. For example a cube has 12 edges. Vertices - A vertex is a ...

Explore the properties of 2D shapes from one-sided circles to the eight-sided octagons. Shapes with 3 sides Explore shapes with 3 sides and look at curved and straight lines. Shapes with 4 sides ...