Unit 3 Review

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

Lines DE, AB, and GC appear to be _________

• parallel
• perpendicular
• skew

Are lines j and k skew?

• yes
• no

Name the angle relationship.

• Alternate Interior
• Alternate Exterior
• Corresponding
• Vertical Angles