Principles of Two-Dimensional Design
Interrelationships of Form

Each composition begins with a super-unit that clearly demonstrates one assigned relationship:
- Detached: The forms remain separate.
- Touching: The forms meet at an edge or point without overlapping.
- Overlapped: One form appears in front of another.
- Interpenetration: Overlapping forms remain visible through each other, producing shared internal areas.
Super-unit versus composition

A super-unit is a small structure created by combining two or more shapes through an Interrelationship of Form.
The final composition must develop that starting structure into a larger visual system:
- Create one clearly resolved super-unit.
- Repeat the super-unit at least eight times.
- Alter the repeated instances in a controlled way.
- Organize the instances through the assigned grid and principle.
The relationship inside the original super-unit must remain identifiable after the instances are altered.
Other Principles
Repetition
Repetition occurs when the same visual element is used more than once. Repeated shapes, lines, or forms create consistency, rhythm, and structure across the composition.
Structure
Structure is the underlying system that organizes forms within a composition. It controls their placement, alignment, spacing, and relationships through a grid or other consistent framework.
Similarity
Similarity occurs when forms share common characteristics, such as shape, size, direction, or texture. These shared features make the elements appear related, even when they are not identical.
Gradation
Gradation occurs when visual elements change gradually. These changes may involve size, direction, position, shape, or spacing, creating progression, movement, and visual transition.
Source: Wong, W. (1972). “Principles of Two Deimensional Design”. Van Nostrand Reinhold Company.
Form and Space
The activity also applies three categories of form from Timothy Samara’s chapter “Seeing Form and Space.”
Dot
A dot creates a concentrated point of attention within a space. Its size, position, and proximity to other forms affect its visual dominance, grouping, tension, and relationship to the surrounding format.
Line
A line creates connection, direction, and movement. It can link points, divide or contain space, and establish rhythm through changes in length, weight, direction, spacing, and repetition.
Plane & Mass
A plane is a larger form defined by its outer contour. Its scale, shape, texture, value, and relationship to the surrounding space determine whether it appears flat, becomes a dominant visual mass, or creates the impression of depth and volume.
Source: Samara, T. (2007). “Seeing Form and Space: Categories of Form.” In Design Elements: A Graphic Style Manual (pp. 45–53). Rockport Publishers.



