@prefix psr: <http://data.loterre.fr/ark:/67375/PSR> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

psr:-VQS8TRPW-N
  skos:prefLabel "Brahmagupta's formula"@en, "formule de Brahmagupta"@fr ;
  a skos:Concept ;
  skos:related psr:-S76BR7BD-Z .

psr:-ST8XF8P3-G
  skos:prefLabel "geometric drawing"@en, "construction géométrique"@fr ;
  a skos:Concept ;
  skos:narrower psr:-S76BR7BD-Z .

psr: a skos:ConceptScheme .
psr:-ZF0M573W-H
  skos:prefLabel "Ptolemy's theorem"@en, "théorème de Ptolémée"@fr ;
  a skos:Concept ;
  skos:related psr:-S76BR7BD-Z .

psr:-S76BR7BD-Z
  skos:inScheme psr: ;
  dc:modified "2024-10-18"^^xsd:date ;
  skos:definition """En géométrie, un quadrilatère inscriptible (ou cyclique) est un quadrilatère dont les sommets se trouvent tous sur un seul et même cercle. Les sommets sont dits cocycliques. Le quadrilatère est dit inscrit dans le cercle, et le cercle, circonscrit au quadrilatère. 
<br/>(Wikipedia, L'Encylopédie Libre, <a href="https://fr.wikipedia.org/wiki/Quadrilat%C3%A8re_inscriptible">https://fr.wikipedia.org/wiki/Quadrilat%C3%A8re_inscriptible</a>)"""@fr, """In Euclidean geometry, a cyclic quadrilateral or inscribed quadrilateral is a quadrilateral whose vertices all lie on a single circle. This circle is called the circumcircle or circumscribed circle, and the vertices are said to be concyclic. The center of the circle and its radius are called the circumcenter and the circumradius respectively. Other names for these quadrilaterals are concyclic quadrilateral and chordal quadrilateral, the latter since the sides of the quadrilateral are chords of the circumcircle. Usually the quadrilateral is assumed to be convex, but there are also crossed cyclic quadrilaterals. The formulas and properties given below are valid in the convex case. 
<br/>(Wikipedia, The Free Encyclopedia, <a href="https://en.wikipedia.org/wiki/Cyclic_quadrilateral">https://en.wikipedia.org/wiki/Cyclic_quadrilateral</a>)"""@en ;
  skos:prefLabel "quadrilatère inscriptible"@fr, "inscribed quadrilateral"@en ;
  skos:altLabel "quadrilatère cyclique"@fr, "cyclic quadrilateral"@en ;
  skos:related psr:-ZF0M573W-H, psr:-VQS8TRPW-N ;
  skos:exactMatch <https://fr.wikipedia.org/wiki/Quadrilat%C3%A8re_inscriptible>, <https://en.wikipedia.org/wiki/Cyclic_quadrilateral> ;
  skos:broader psr:-ST8XF8P3-G ;
  a skos:Concept .