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Golden rectangle : ウィキペディア英語版 | Golden rectangle
In geometry, a golden rectangle is a rectangle whose side lengths are in the golden ratio, , which is (the Greek letter phi), where is approximately 1.618. ==Construction==
A golden rectangle can be constructed with only straightedge and compass by four simple steps: # Construct a simple square. # Draw a line from the midpoint of one side of the square to an opposite corner. # Use that line as the radius to draw an arc that defines the height of the rectangle. # Complete the golden rectangle.
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「Golden rectangle」の詳細全文を読む
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