3: Lines Last updated Save as PDF Page ID443 Contributed by CK12CK12 3.1: Line Types3.2: Parallel and Skew Lines3.3: Parallel Lines and Transversals3.4: Corresponding Angles3.5: Alternate Interior Angles3.6: Alternate Exterior Angles3.7: Same Side Interior Angles3.8: Angles and Perpendicular Lines3.9: Parallel Lines in the Coordinate Plane3.10: Perpendicular Lines in the Coordinate Plane3.11: Line Construction Thumbnail: Angles A and B are adjacent. (Public Domain; Limaner via Wikipedia)