Concept information
Preferred term
parallel
Definition(s)
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In geometry, parallel lines are coplanar infinite straight lines that do not intersect at any point. Parallel planes are planes in the same three-dimensional space that never meet. Parallel curves are curves that do not touch each other or intersect and keep a fixed minimum distance. In three-dimensional Euclidean space, a line and a plane that do not share a point are also said to be parallel. However, two noncoplanar lines are called skew lines. Parallel lines are the subject of Euclid's parallel postulate. Parallelism is primarily a property of affine geometries and Euclidean geometry is a special instance of this type of geometry. In some other geometries, such as hyperbolic geometry, lines can have analogous properties that are referred to as parallelism.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Parallel_(geometry))
Broader concept(s)
In other languages
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French
URI
http://data.loterre.fr/ark:/67375/PSR-D4LZSSMG-9
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