Illustration showing a nesting of 5 golden rectangles. Two quantities are considered to be in the golden ratio if (a+ b)/a = a/b which is represented by the Greek letter phi. The large rectangle shown is divided to show the a golden rectangle. The smaller portion is then divided into the golden ratio again, and so on.
Keywordsrectangles, golden rectangle, golden ratio, golden mean, golden proportion, golden section, extreme ratio, mean ratio, medial section, golden cut, divine section
Florida Center for Instructional Technology Clipart ETC (Tampa: University of South Florida, 2007)