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Original Articles

Diagrams and mathematical reasoning: some points, lines, and figures

Pages 97-101 | Published online: 28 Feb 2007
 

Abstract

A well-composed diagram can explain more than thousand words. This holds especially for ‘Proofs without words’. This article puts such proofs into a historical perspective and pays special attention to two examples proposed by the early seventeenth-century Dutch geometer Sybrandt Hansz Cardinael.

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