The Golden Ratio describes the perfectly symmetrical relationship between two proportions.

Approximately equal to a 1:1.61 ratio, the Golden Ratio can be illustrated using a Golden Rectangle: a large rectangle consisting of a square (with sides equal in length to the shortest length of the rectangle) and a smaller rectangle.

Golden Ratio template (2000 x 1237 pixels)

Golden Ratio template (2000 x 1237 pixels)

Golden Ratio template (3000 x 1865 pixels)

Golden Ratio template (3000 x 1865 pixels)

David Hodder - Golden Ration Design Banner