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English: A golden rectangle with longer side a and shorter side b, when placed adjacent to a square with sides of length a, will produce a similar golden rectangle with longer side a + b and shorter side a. This illustrates the relationship  \frac{a+b}{a} = \frac{a}{b} =  1.618  = \varphi\ ,.
Date 17:16, 29 June 2011 (UTC)
Source Own work
Author Ahecht (Original); Pbroks13 (Derivative work); Joo. (Editing)


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