The ∥ symbol means "is parallel to".
Explanation of Parallel Lines and the ∥ Symbol
In geometry, parallel lines are lines in a plane that never intersect or meet. The symbol ∥ is used to denote this relationship.
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Definition: Two lines are parallel if they lie in the same plane and do not intersect, no matter how far they are extended.
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Symbolism: The symbol "∥" is a visual representation of two parallel lines.
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Example: If line AB is parallel to line CD, it is written as AB ∥ CD.
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Non-Parallel Lines: Lines that intersect are, by definition, not parallel.
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Axiom: A line is not parallel to itself, as it intersects itself infinitely often.
In summary, the ∥ symbol is a concise and universally recognized notation to indicate that two lines (or line segments, rays, etc.) are parallel to each other.