Line, Shape and Value

Geometric and Organic

The light source reflecting off of the subject to the viewer.

The lightness or darkness of tones or colors

The light that reflects off of a surface onto the subject

Where the light is coming from

Where the light is blocked by a subject (usually found on the ground)

2-D Form

Technique used to shade (an area) with intersecting sets of parallel lines.

Define the edges of objects (Outlines)

Describe form and volume