What is the difference between 3d shapes and 2d shapes?

Answer 1

The difference between 2d and 3d shapes is that, a 2d shape is flat, has no volume and depth and cannot be handled while a 3d shape can be held, has depth, volume and can hold things inside it. These are the dimensional shapes which are mostly used in geometry.

Answer 2

2D is two dimensional and 3D is three dimensional.