The relationship of parts of the same object, or the relationship between different objects in the same group.

A rectangle having sides in a ratio 2:3, The short sides are two-thirds the length of the long sides

The division of a line between one-half and one-third length, which creates a more pleasing look to the eye than an equal division.

The division of a line or form in such a way the ratio of the smaller section to the larger section

The size of an object on an architectural drawing, drawn proportionately to actual size. The relative size of an object in relation to other objects.

The perception that an object weighs more or less than it really does.

A perception of the way arrangements are seen. It is the equilibrium among parts of a design.

The arrangement of identical objects on both sides if a center point; also called symmetrical balance

The arrangement of different but equivalent objects on both sides of a center point; also called asymmetrical balance

A center of interest or focal point in a room

A sense of movement that smoothly leads the eyes from one area to another in design; the cause of an organized pattern

Repeating an element of design. It is one o the easiest ways to achieve rhythm in design.

The type of rhythm created by a gradual increase or decrease of similar elements of design.

Lines flowing away from a central point

Lines meeting to form right angles

Drawing attention from from one part of an object to another part

Agreement among parts. It is created when the elements of design are effectively used according to the principles of design.

Repeating similar elements of design to relate all parts of a design to one idea

Applying design principles to complement the senses of sight, hearing, smell, and touch.