In mathematics, two quantities are in the golden ratio if their ratio is the same as the ratio of their sum to the
larger of the two quantities. The figure on the right illustrates the geometric relationship. Expressed algebraically,
for quantities a and b with a > b > 0,
The golden ratio is also called the golden mean or golden section (Latin: sectio aurea). Other names include
extreme and mean ratio, medial section, divine proportion (Latin: proportio divina), divine section (Latin: sectio
divina), golden proportion, golden cut, and golden number.
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