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A dynamic rectangle is a right-angled, four-sided figure (a rectangle) with dynamic symmetry, which in this case, means that aspect ratio (height divided by width) is a distinguished value in dynamic symmetry, a proportioning system and natural design methodology described in Jay Hambidge's books. These dynamic rectangles begin with a square, which is extended (using a series of arcs and cross points) to form the desired figure, which can be the golden rectangle (1 : 1.618...), the 2:3 rectangle, the double square (1:2), or a root rectangle (1:, 1:, 1:, 1:, etc.).〔SKINNER, Stephen, ''Sacred Geometry Deciphering the Code'', New York City: Sterling Publishing Company, 2006, pp. 53〕〔 〕〔 〕 ==Root rectangles== A root rectangle is a rectangle in which the ratio of the longer side to the shorter is the square root of an integer, such as , , etc.〔 (or 2003 reprint from Kessinger Publishing, Whitefish, MT, ISBN 0-7661-7679-7)〕 The root-2 rectangle (ACDK in Fig. 10) is constructed by extending two opposite sides of a square to the length of the square's diagonal. The root-3 rectangle is constructed by extending the two longer sides of a root-2 rectangle to the length of the root-2 rectangle's diagonal. Each successive root rectangle is produced by extending a root rectangle's longer sides to equal the length of that rectangle's diagonal.〔Jay Hambidge. (1926, 1948, 1967)''(The Elements of Dynamic Symmetry )''. Courier Dover Publications. pp. 9–10.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「dynamic rectangle」の詳細全文を読む スポンサード リンク
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