The mathematical ratio of the larger side of a rectangle as it relates to the shorter side. The ratio is 1:1.618. The number 1.618 is known as phi and is found repeatedly in nature and in many instances of art and architecture. Use of the golden mean is thought to produce pleasing effects and harmony in a work. See the Composition and Design Forum.

Also referred to as the "Golden section" and the "Gold mean," the Golden mean is an ancient fine arts formula that mathematically defines a rectangle of specific proportions. This rectangle, called the "Golden rectangle," is believed to frame objects in pleasing proportions. (See Rule of Thirds for more information.)

The ratio of .618 or 1.618. Considered by the ancients to be the most pleasing ratio to the eye. The most sacred ratio. Found in sacred architecture and sacred geometry. The ratio of agape love, perfect dna, sacred spirals, the dodecahedron, etc.

Compositional technique used to determine the "ideal" position of the main subject in the frame. It is based on creating a rectangle from a square. A line drawn from the center of one side of the square to the opposite corner becomes the radius of an arc. The side of the square is then protracted until it meets the arc, and from this point a rectangle is constructed. The side of the square which remains in the rectangle indicates the point at which the subject should be placed.

The number , or about 1.61803. The Golden Mean arises in many settings, particularly in connection with the Fibonacci sequence. Note: The reciprocal of the Golden Mean is about 0.6103, so the Golden Mean is its reciprocal plus one. It is also a root of . Same as Golden Ratio.

the proportional relation between two divisions of line or two dimension of a plane figure such that short : long :: long : (short + long)

or golden ratio = (1+sqrt(5))/2 ~ 1.61803 is the limit of quotients of successive Fibonacci numbers. Presumed to occur in Greek and Renaissance art and architecture.

Perfect harmonious proportions that avoid extremes; the moderation between extremes.

Section d'Or refers to a geometric proportion in a composition. The actual definition of golden section is a line that is divided so that the smaller part of the line is to the larger part of the line as the larger part is to the whole line. This usually turns out to be a ratio of 8:13 and is visible in many works of art and architecture.

Also known as the Golden Rule or Golden Section, a system of measuring in which units used to construct designs are subdivided into two parts in such a way that the longer subdivision is related to the length of the whole unit in the same proportion as the shorter subdivision is related to the longer subdivision. The esthetic appeal of these proportions has led artists of varying periods and cultures to employ them in determining basic dimensions

Geometric formula whereby a harmonious composition is created. The proportions within any rectangle are geometrically divided with the focal point strategically positioned on the resulting intersection. Using this method assures good compositional structure and has been used by artists for hundreds of years.