Geometry: Are the Shapes 2D or 3D?

Have you ever noticed that some shapes look flat, whereas others look like they are popping up from the page?

2-dimensional (2-D) shapes are flat and can only be drawn on paper.   They only have 2 measurements that you can take which are length and height.

3-dimensional (3-D) shapes are solid and can be picked up.  These have 3 measurements that you can take, length, height and depth.

You should know the names of the following shapes.  Most items around you are made up of 3D shapes, which ones can you see?