Parallel, Perpendicular, Skew Lines

What kinds of lines are pictured?

• Parallel

• Perpendicular

• Intersecting

• Skew

Name a line skew to AD

• EH

• AB

• CG

• EH

• yes

• no

Name a segment skew to segment EF.

• segment CD

• segment DH

• segment AE

• segment FG

Are lines j and k skew?

• yes

• no

• Skew

• Perpendicular

• Parallel

• Skew

• Perpendicular

• Parallel

Name a line skew to FG

• EH

• DC

• AD

• FB

What are parallel lines?

• Two lines that never cross

• Two lines that intersect

• Two lines that intersect at 90 degrees

• Two lines

What does perpendicular mean?

• Lines cross each other

• Lines cross at 90 degrees

• Lines never touch

• Lines are skew