Types of Lines

Front

What is a parallel line?

Back

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

Front

What is a perpendicular line?

Back

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

Front

What is an intersecting line?

Back

Lines that cross each other at any angle.

Front

What is a ray?

Back

A part of a line that starts at a point and goes on forever in one direction.

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

How do you identify parallel lines in a picture?

Back

Look for lines that are equidistant and never touch.

Front

How do you identify perpendicular lines in a picture?

Back

Look for lines that meet at a right angle.

Front

What happens when two lines intersect?

Back

They cross each other at a point.

Front

Can parallel lines ever meet?

Back

No, parallel lines never meet.

Front

What is the angle formed by perpendicular lines?

Back

90 degrees.