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  1. Perpendicular and Parallel - Math is Fun

    That's right, when we rotate a perpendicular line by 90° it becomes parallel (except if it overlaps!) Perpendicular ... ... Parallel. Likewise, parallel lines become perpendicular when one line is …

  2. Parallel and Perpendicular Lines - Science Notes and Projects

    Jun 14, 2022 · Parallel and perpendicular lines are two key concepts in geometry. Here are the definitions of parallel and perpendicular, a look at their properties, and how to use slope to …

  3. Parallel and Perpendicular Lines - Equations, Graphs, & Examples

    Mar 26, 2025 · Parallel lines are two or more lines that lie in the same plane but never intersect, no matter how far they are extended. The symbol ‖ is used to indicate parallel lines. In …

  4. Parallel and Perpendicular Lines - Definition, Properties ...

    Two lines are termed as parallel if they lie in the same plane, are the same distance apart, and never meet each other. Perpendicular lines are intersecting lines that always meet at an angle …

  5. Parallel and Perpendicular Lines – Definition With Examples

    Parallel and perpendicular lines are two important concepts in geometry. Parallel lines are the lines that never intersect each other. Thus, two parallel lines always maintain a constant …

  6. Parallel and Perpendicular Lines | College Algebra

    As with parallel lines, we can determine whether two lines are perpendicular by comparing their slopes. The slope of each line below is the negative reciprocal of the other so the lines are …

  7. 1.9.4: Parallel and Perpendicular Lines - Physics LibreTexts

    May 23, 2025 · Parallel lines never meet, and perpendicular lines intersect at a right angle. A ⁢ B ↔ and C ⁢ D ↔ do not intersect in this image, but if you imagine extending both lines, they will …