Define parallel lines [no spam]
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Answer:
In geometry, parallel lines are lines in a plane which do not meet; that is, two straight lines in a plane that do not intersect at any point are said to be parallel. ... A line and a plane, or two planes, in three-dimensional Euclidean space that do not share a point are also said to be parallel.
Step-by-step explanation:
geometry, parallel lines are lines in a plane which do not meet; that is, two straight lines in a plane that do not intersect at any point are said to be parallel. ... A line and a plane, or two planes, in three-dimensional Euclidean space that do not share a point are also said to be parallel.
Parallel lines are the subject of Euclid's parallel postulate.[1] 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.