It is a line extended in a direction other than its intrinsic direction. Shape is the primary identifying characteristic which is determined by the contour of the edged. It serves to define the limit or boundaries of a volumen.

A plane extended in direction other than its intrinsic direction, consisting of points or vertices, lines, or edges and planes or surfaces. It can be solid that has a mass or a complete void.

It is the primary identifying characteristic of a volume.

One of the visual properties of form which characteristic is the outline or surface configuration of a particular form, a principal aspect and categorizing forms. Perception of this depends on the visual contrast of the figure ground and background.

It determines the physical dimensions which also determines the proportion.

It is determined by size relative to other forms in its context.

The phenomenon of light and visual perception, most clearly distinguishes the form from its background and also affect the visual weight.

Visual and tactile quality due to the surface configuration, also determines the reflectance or absorption of light.

Location of form relative to the environment or the visual field.