Pottery is a three dimensional form of art because it has height, width and depth. Even if the piece is flat, there is still a third dimension. This is where it differs from art works such as paintings or drawings. There are three distinct measurements to each work of pottery. Sculpture is another type of art that is three-dimensional. The artist may chip away at stone, marble or wood. As they do so, they create a piece that is measured three different ways to create their work of art.
Woodworkers will often choose to create in three dimensions. Whether the artist is hand carving or joining several pieces, these artists have the ability to create a work that has height, width and depth. Perspective points are not necessary as depth is included in the work itself. This same concept can be applied to artists that work with glass, metal and a combination of these materials.