What is the perimeter? Discover how to work out the area of a 2D shape ... Find out how to use a formula to work out the area of a flat shape. Properties of 3D shapes Learn about faces, edges ...

2-dimensional shapes - Edexcel 2-dimensional shapes are flat. The perimeter of a 2D shape is the total ... Volume is the space contained within a 3D shape. Surface area is the sum of the area ...