A polygon is a 2D shape with straight sides that meet at vertices. Polygons have three or more sides. Have a look at these three shapes. One of them is not a polygon. Can you work out which?

A square-based pyramid has five faces. The vertices of a pyramid are around the polygon base plus the apex vertex. A triangle-based pyramid has four vertices. A square-based pyramid has five vertices.

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 have. A three-dimensional (3D) shape is a solid ...

Polygons can be regular or irregular in shape. A polygon is a closed 2D shape with at least three sides. A regular polygon is a polygon with all equal sides and angles. An irregular polygon is a ...

A polygon is simply a shape with three or more sides and angles. Quadrilaterals are 2D shapes with four sides and angles. There are six special quadrilaterals with different properties.

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 irregular. If all the straight sides of a shape ...

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 have. A three-dimensional (3D) shape is a solid ...