Shapes with 4 sides Explore four-sided shapes looking at straight lines, curved lines and 2D shapes. What are 2D shapes? Explore the properties of 2D shapes from one-sided circles to the eight ...

A 2D shape could have line symmetry or rotation symmetry, or both! 3D shapes are described by their faces, edges and vertices. The faces can be the same shape or different, and a 3D shape could ...

Some examples of solids that incorporate 2D shapes are mentioned in this video by Sanchit — for example, a cube has six square faces.