Lines, Line Segments, Parallel, Perpendicular Lines

Front

What are parallel lines?

Back

Lines that never meet and are always the same distance apart.

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

What are perpendicular lines?

Back

Lines that intersect at a right angle (90 degrees).

Front

What is a vertex?

Back

A point where two lines meet.

Front

What is a horizontal line?

Back

A line that goes from left to right and is flat.

Front

What is a vertical line?

Back

A line that goes up and down.

Front

How do you identify parallel lines?

Back

They are always the same distance apart and never touch.

Front

How do you identify perpendicular lines?

Back

They cross each other to form right angles.

Front

What is the difference between a line and a line segment?

Back

A line goes on forever in both directions, while a line segment has two endpoints.

Front

Can two lines be both parallel and perpendicular?

Back

No, parallel lines never meet, while perpendicular lines intersect.