Parallel, Perpendicular, Skew Lines

Name a line skew to FG

• EH
• DC
• AD
• FB

What does collinear mean?

• Points on the same plane
• Two lines that never intersect
• Points on the same line
• Lines that cross each other

What kinds of lines are pictured?

• Parallel
• Perpendicular
• Intersecting
• Skew

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

Name a line parallel to AD

• EH
• AB
• DC
• HG

Name a line perpendicular to AD

• EH
• AB
• CG
• HG

Name a line skew to AD

• EH
• AB
• CG
• EH

Name a line skew to AB

• EH
• DC
• AE
• HG

Name a line parallel to AB

• EH
• DC
• AE
• FG