What is the golden ratio and how is it used in architecture?

• A. The golden ratio is 2:1 and dictates maximum height to width.
• B. The golden ratio approximately 1.618:1 and is used as a proportion guide to achieve harmony in composition.
• C. The golden ratio equals pi and relates to circular forms.
• D. The golden ratio is the ratio of daylight to darkness in design.

Answer: (B)

The golden ratio is a proportion of about 1.618 to 1, used as a guide to achieve harmony in composition. In architecture, this means arranging widths, heights, and spatial relationships so that each part relates to the whole in that same ratio, creating a sense of balance and visual appeal. It’s a design heuristic rather than a rigid rule, helping to organize forms, façades, and room dimensions in a way that often feels naturally pleasing.

The other options don’t fit because 2:1 isn’t the golden ratio, pi relates to circles and circular measurements rather than this specific proportion, and daylight-to-darkness isn’t a standard architectural ratio.