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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/AP/11/23" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Unpublished paper, 'On the nature and properties of straight lined angles' by J [John] Walsh</dc:title>
  <dc:description>Walsh provides a new definition of a right angle, or straight lined angle, and attempts to address difficulties in the theory of parallels. A later version of this paper is found at AP/11/25.

Subject: Mathematics

Written by Walsh in Cork [Ireland].</dc:description>
  <dc:date>15 January 1825</dc:date>
</rdf:Description>