Sculpture is a plastic art.
What exactly is a plastic art?
Sculpturing is any art that is three dimensions.
What other art forms employ three dimensions?
Sculpture
Sculpture is the branch of the visual arts that operates in three dimensions. It is one of the plastic arts. Durable sculptural processes originally used carving (the removal of material) and modelling (the addition of material, as clay), in stone, metal, ceramics, wood and other materials but, since Modernism, there has been an almost complete freedom of materials and process. A wide variety of materials may be worked by removal such as carving, assembled by welding or modelling, or molded or cast
been sufficient for artists. But according to Apollinaire, "geometry is to the plastic arts what grammar is to the art of the writer". Artists, just as scientists, no longer had to limit themselves to three spatial dimensions. They were guided by intuition, to preoccupy themselves with the new possibilities of spatial measurement which included the 'fourth dimension'. This fictitious realm represented the "immensity of space eternalizing itself in all directions at any given moment". This utopian expression stood for the aspiration and premonitions of artists