The path of a moving point at the edge of a flat shape, or outline of a solid object. It is longer than it is wide.

Lines do have some width as well as length, this is called measure.

Types of line are straight, curvy, horizontal, vertical, diagonal, zigzag, implied, and angular.

Shape is a two-dimensional area made by connecting lines that show the edges of an object.

Shapes may be positive or negative, organic or geometric.

Shapes may stand out also by a difference of value, color, or texture.

The three dimensional projection of a shape. It has volume, dimension, and appears to have mass. This element is frequently used in sculpture.

The appearance of lights and darks found in a work of art.

These range from black to white with numerous shades of gray in between.

The way an object or substance reacts when light is reflected by the object. Usually determined visually by a measurement of hue (color), saturation (purity of color), and brightness of the reflected light (how much light). It identifies objects, creates moods, and affects emotions. (warm, cool, primary, secondary, intermediate, and complementary).

The roughness or smoothness of a surface.

Texture can be real, tactile(sandpaper), or illusion (looks soft, but not).

Amount of measurable distance between pre-established points.

Two-dimensional space has height and width.

Three-dimensional space has height, width, volume. Deep--foreground, middle ground, background. Shallow--foreground and background.