Parallel, Perpendicular and Skew Lines

Front

What does it mean for two lines to be perpendicular?

Back

Two lines are perpendicular if they intersect at a right angle (90 degrees).

Front

What is a parallel line?

Back

Parallel lines are lines in a plane that never meet; they are always the same distance apart.

Front

What is the symbol used to denote that two lines are perpendicular?

Back

The symbol used is '⊥'.

Front

What does it mean for two lines to be skew?

Back

Skew lines are lines that do not intersect and are not parallel; they exist in different planes.

Front

Can two lines be both parallel and perpendicular?

Back

No, two lines cannot be both parallel and perpendicular at the same time.

Front

What is an example of parallel lines in real life?

Back

Railroad tracks are a common example of parallel lines.

Front

How can you determine if two lines are parallel using their slopes?

Back

Two lines are parallel if they have the same slope.

Front

What is the relationship between perpendicular lines and their slopes?

Back

Two lines are perpendicular if the product of their slopes is -1.

Front

What is the difference between intersecting and non-intersecting lines?

Back

Intersecting lines cross each other at a point, while non-intersecting lines do not meet.

Front

What is a transversal line?

Back

A transversal is a line that crosses at least two other lines.