Form Definition

Form is a three dimensional shape, such as a cube, sphere or cone. Sculpture and 3D design are about creating forms. In 2D artworks, tone and perspective can be used to create an illusion of form. 

This image links to form because it shows us a picture of a 3D image which we can establish the shape of the object from. We can tell from this picture that this is 3D from the shadows created. The key thing for form is the light source to create the shadow showing us the object is 3D.

A shape is an area enclosed by a line. It could be just an outline or it could be shaded in. Shapes can be either geometric, like a circle, square or triangle, or irregular.

This image links to shape because there is no light source that shows us that the shapes that we see are not 3D they are just 2D shapes.