That will depend on what they are but in general 3D shapes have surface area and volume whereas 2D shapes have only surface area.
It depends on the 3d shape.
It is not a 3D shape.
A camera is a 3D shape. A photograph is a 2D projection of a 3D shape onto a 2D shape.
a pyramid is a 3D shape :)
is a square a 3d shape
what 3d shape is a tyre
Paper is a 3D object.
Many 3d shapes have a corner.
A 3d shape can have infinite sides
Its a 3d net that can be transformed into a 3d shape
A 12 sided 3D shape is a dodecahedron.
A cylinder is a 3d shape because you can see the in side of it.