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Pattern

A pattern is a repeated use of lines, colors, or other elements. A familiar example is repeated dots in a piece of polka dotted cloth.  Each dot is part of it. 
Text Box:  Roberts’ photograph of spools shows pattern.

Two-dimensional examples are created by using a motif over and over again.  A motif is one complete unit in a larger design. A motif might be a simple flower-like design or a geometric shape used in a fabric decoration.
In three-dimensional art, a module is one complete unit. A brick is one kind of module. Others might be columns on a building or cylinders made of clay or a sculpture.  
This design element tends to unify a work of art. When a motif or module is arranged regularly, the design is often called an all-over type.

Pattern fill-in sheet