Proportion refers to the size relationship of objects or parts to the whole.
Golden Ratio (mean, section, or proportion)
The Golden Ratio is considered one of the most visually pleasing proportions. It is a mathematical relationship that is found throughout nature and has been used in every form design.
Rule of 3’s and Odd Numbers
The human brain is subconsciously drawn to odd numbers or odd divisions. Three objects is often more visually appealing than two.