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  1. Parallel lines - Definition, Properties | What are Parallel

    Parallel lines are those lines that are always the same distance apart and that never meet. The symbol used to denote parallel lines is ||. Explore more about parallel lines, equations, and …

  2. Parallel Lines | Definition, Properties & Formula - GeeksforGeeks

    Jul 23, 2025 · Parallel lines are two or more than two lines that are always parallel to each other, and they lie on the same plane. No matter how long parallel lines are extended, they never meet.

  3. What are Parallel Lines? Definition, Properties, Examples, Facts

    In geometry, parallel lines can be defined as two lines in the same plane that are at equal distance from each other and never meet. They can be both horizontal and vertical.

  4. Parallel Lines (Geometry) | Brilliant Math & Science Wiki

    In three-dimensional space, parallel lines are (still) lines which lie on the same plane and do not intersect. It is important to note that some other lines in three-dimensional space may not …

  5. Parallel Lines, and Pairs of Angles - Math is Fun

    Lines are parallel if they are always the same distance apart (called equidistant), and never meet. Just remember:

  6. Parallel lines - Math.net

    Line segments and rays that are parts of parallel lines are also parallel. Parallel lines are coplanar lines that are equidistant from each other throughout their entire lengths. Parallel lines never …

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  7. Parallel Lines - Definition, Math Steps, Examples & Questions

    What are the properties of parallel lines? Parallel lines are always straight lines that are the same distance apart, they never intersect and they are coplanar (meaning on the same plane).

  8. Parallel Lines – Definition, Examples - EDU.COM

    Parallel lines are two or more straight lines that exist in the same plane and maintain an equal distance from each other at all points. These lines never intersect, no matter how far they are …

  9. Parallel Lines Definition - Honors Geometry Key Term | Fiveable

    Parallel lines are straight lines in a plane that never meet, no matter how far they are extended, and they maintain a constant distance apart.

  10. What are parallel lines? Definition, properties and angles

    Parallel lines are two or more lines that are always the same distance apart and never intersect, even if they’re extended infinitely in both directions. They’re always equidistant (a fancy word …