About 48,000,000 results
Open links in new tab
  1. Parallel (geometry) - Wikipedia

    In geometry, parallel lines are coplanar infinite straight lines that do not intersect at any point. Parallel planes are infinite flat planes in the same three-dimensional space that never meet.

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

    Two or more lines that lie in the same plane and never intersect each other are known as parallel lines. They are equidistant from each other and have the same slope.

  3. 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: Always the same distance apart and never touching. The red line is …

  4. 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).

  5. 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.

  6. What are the Properties of Parallel Lines? - GeeksforGeeks

    Jul 23, 2025 · Parallel lines are non-intersecting lines, parallel lines have equal slopes, and they meet at infinity. Let's learn in detail about the properties of parallel lines, along with examples …

  7. Parallel (geometry) explained

    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.

  8. Parallel lines - Math.net

    In coordinate geometry, parallel lines have the same slope. The converse is also true; if two lines have the same slope, the two lines are parallel unless they overlap.

  9. What are parallel lines? - DoodleLearning

    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 …

  10. Definitions and Theorems of Parallel Lines - dummies

    Mar 26, 2016 · Parallel lines are important when you study quadrilaterals because six of the seven types of quadrilaterals (all of them except the kite) contain parallel lines. The eight angles …