About: Seven circles theorem

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In geometry, the seven circles theorem is a theorem about a certain arrangement of seven circles in the Euclidean plane. Specifically, given a chain of six circles all tangent to a seventh circle and each tangent to its two neighbors, the three lines drawn between opposite pairs of the points of tangency on the seventh circle all pass through the same point. Though elementary in nature, this theorem was not discovered until 1974 (by Evelyn, Money-Coutts, and Tyrrell).

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rdf:type	yago:WikicatCircles yago:WikicatTheoremsInPlaneGeometry yago:Abstraction100002137 yago:Attribute100024264 yago:Circle113873502 yago:Communication100033020 yago:ConicSection113872975 yago:Ellipse113878306 yago:Figure113862780 yago:Message106598915 yago:PlaneFigure113863186 yago:Proposition106750804 yago:Shape100027807 yago:Statement106722453 yago:Theorem106752293
rdfs:label	Teorema tujuh lingkaran (in) Seven circles theorem (en)
rdfs:comment	In geometry, the seven circles theorem is a theorem about a certain arrangement of seven circles in the Euclidean plane. Specifically, given a chain of six circles all tangent to a seventh circle and each tangent to its two neighbors, the three lines drawn between opposite pairs of the points of tangency on the seventh circle all pass through the same point. Though elementary in nature, this theorem was not discovered until 1974 (by Evelyn, Money-Coutts, and Tyrrell). (en)
foaf:depiction
dcterms:subject	Theorems about circles
Wikipage page ID	19334999 (xsd:integer)
Wikipage revision ID	1117601937 (xsd:integer)
Link from a Wikipage to another Wikipage	Circle Geometry Line (geometry) Point (geometry) Tangent Theorem on friends and strangers Cut-the-knot Brianchon's theorem Theorems about circles Euclidean plane
Link from a Wikipage to an external page	http://www.cut-the-knot.org/Curriculum/Geometry/SevenCirclesTheorem.shtml https://archive.org/details/penguindictionar0000well/page/227 https://www.geogebra.org/m/YxfFVegt http://www.geogebra.org/webstart/ http://www.mathpropress.com/stan/bibliography/sevenCircles.pdf
sameAs	Seven circles theorem Seven circles theorem Seven circles theorem Seven circles theorem Seven circles theorem Seven circles theorem Seven circles theorem Seven circles theorem Seven circles theorem
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thumbnail	wiki-commons:Special:FilePath/Teorema_de_les_set_circumferències.svg?width=300
title	Seven Circles Theorem (en)
urlname	SevenCirclesTheorem (en)
has abstract	In geometry, the seven circles theorem is a theorem about a certain arrangement of seven circles in the Euclidean plane. Specifically, given a chain of six circles all tangent to a seventh circle and each tangent to its two neighbors, the three lines drawn between opposite pairs of the points of tangency on the seventh circle all pass through the same point. Though elementary in nature, this theorem was not discovered until 1974 (by Evelyn, Money-Coutts, and Tyrrell). (en)
gold:hypernym	Theorem
prov:wasDerivedFrom	wikipedia-en:Seven_circles_theorem?oldid=1117601937&ns=0
page length (characters) of wiki page	2291 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Seven_circles_theorem
is Link from a Wikipage to another Wikipage of	List of circle topics Circle theorem Brianchon's theorem Seven Circles Five circles theorem
is foaf:primaryTopic of	wikipedia-en:Seven_circles_theorem

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