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Astronomy (thesaurus)

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Concept information

Preferred term

circle  

Definition

  • A circle is the set of all points in a plane at a given distance r, called the radius, from a fixed point, called the center. A circle is a simple closed curve that divides the plane into an interior and exterior. It has a perimeter, called a circumference, of length 2πr, and encloses an area of πr². (Encyclopedia of Science, by David Darling, https://www.daviddarling.info/encyclopedia/C/circle.html)

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URI

http://data.loterre.fr/ark:/67375/MDL-NW92KTN5-G

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