Perpendicular and Parallel Lines

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  • (0:01) Definitions of Line Types: Line segments have two endpoints, rays have one, and lines extend infinitely.
  • (1:01) Perpendicular Lines: Intersect at a 90-degree angle.
  • (1:29) Parallel Lines: Remain the same distance apart and never intersect.
  • (1:55) Measuring Distance: Between two points, from a point to a line (using a perpendicular line), and between parallel lines.

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