Two-dimensional (2D) shapes are completely flat. They have two dimensions – length and width. A polygon is a closed 2D shape with straight sides that meet at vertices. Polygons can be regular or ...

Two-dimensional (2D) shapes are completely flat. 2D shapes can be found printed in a book or on a website. 2D shapes have sides and corners. A rectangle has 4 straight sides and 4 corners. A square is ...

Gauging the properties of 2D and 3D shapes in space sets children up for finding their way around their world, says Julie Mountain and Felicity Robinson Creative mathematical skills are used in den ...