Conway’s Nonperpendiculars as a Tool: The Case of the Law of Cosines

Michael Neubrand ()
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Michael Neubrand: Carl-von-Ossietzky-University

The Mathematical Intelligencer, 2016, vol. 38, issue 1, No 1, 3 pages

Keywords: Mathematical Intelligencer; Proportional Reasoning; Obtuse Angle; Exterior Angle; Productive Thinking (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1007/s00283-015-9578-1

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