CID Interior Design Principles and Elements

Question 1

What are the seven elements of interior design?

Accepted Answer

Space, line, form, light, color, texture, and pattern

Answer

The seven fundamental elements are space (the foundation), line (horizontal, vertical, dynamic), form (shapes), light (natural and artificial), color (hues and values), texture (surface quality), and pattern (repeated designs).

Question 2

What is the 60-30-10 color rule in interior design?

Accepted Answer

Use a dominant color for 60% of the room, secondary color for 30%, and accent color for 10%

Answer

The 60-30-10 rule creates visual balance: 60% dominant color (walls, large furniture), 30% secondary color (upholstery, curtains), and 10% accent color (accessories, artwork) for a cohesive, balanced space.

Question 3

What is the golden ratio in interior design?

Accepted Answer

A mathematical proportion (approximately 1:1.618) used to create aesthetically pleasing spatial relationships

Answer

The golden ratio (1:1.618) creates naturally pleasing proportions in furniture arrangement, artwork placement, and spatial division, found throughout nature and used in art and architecture for centuries.

Question 4

What is the purpose of a concept board (mood board) in interior design?

Accepted Answer

To visually communicate the design direction through collected materials, colors, textures, and images

Answer

A concept/mood board collects and arranges material samples, color swatches, fabric pieces, images, and inspiration to visually communicate the overall design direction to clients and team members.

Question 5

What is biophilic design?

Accepted Answer

Design that incorporates natural elements and connections to nature to improve human health and well-being

Answer

Biophilic design integrates natural elements (plants, water, natural light, organic materials, nature views) into interior spaces to reduce stress, improve cognitive function, and enhance overall well-being.

Certified Interior Designer (CID) Practice Test

Certified Interior Designer (CID) Practice Test

CID Interior Design Principles and Elements