Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/33743
Title: Proof without words: arctangent of two and the golden ratio
Authors: Plaza, Ángel 
UNESCO Clasification: 120406 Geometría euclidea
Issue Date: 2017
Journal: Mathematics Magazine 
Abstract: It is proved without words that the golden ratio, ϕ, and the arctangent of 2 are related.
URI: http://hdl.handle.net/10553/33743
ISSN: 0025-570X
DOI: 10.4169/math.mag.90.3.179
Source: Mathematics Magazine [ISSN 0025-570X], v. 90 (3), p. 179
URL: http://api.elsevier.com/content/abstract/scopus_id/85032789516
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