Parallel Lines, Parallel Planes, Skew Lines

What kind of lines are these?

• Parallel lines

• Line segments

• Perpendicular Lines

• Intersecting lines

Parallel lines cross one another, or intersect.

• true

• false

.

.

What kind of intersecting lines are these?

• Parallel Lines

• Perpendicular Lines

• adjacent

• opposite

What are parallel lines?

• Lines that form square corners
• lines that never intersect
• lines that pass through the same point
• lines that curve on an angle

A point where two lines meet is called a

• parallel

• opposite

• adjacent

• vertex

Name a line skew to FG

• EH
• DC
• AD
• FB

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