Two-dimensional (2D) shapes are completely flat. They cannot be picked up. A polygon is a 2D shape with straight sides that meet at vertices. Polygons have names that show the number of sides they ...

Help children to use, discuss and think about shapes in mathematical terms with suggestions from Sheila Ebbutt and Carole Skinner. Shapes of things we can see or touch are mostly too complex to ...

Find out how tessellation is when shapes fit together in a pattern with no gaps or overlaps. Shapes with 4 sides Explore four-sided shapes looking at straight lines, curved lines and 2D shapes. What ...