Lines and Angles

Front

What are perpendicular lines?

Back

Perpendicular lines are two lines that intersect at 90º.

Front

What are parallel lines?

Back

Parallel lines are two lines that will always stay the same distance apart without intersecting.

Front

What do we call two lines that intersect and form right angles?

Back

We call them perpendicular lines.

Front

What is the angle formed by perpendicular lines?

Back

The angle formed by perpendicular lines is 90 degrees.

Front

Can parallel lines ever meet?

Back

No, parallel lines will never meet.

Front

What is an example of perpendicular lines in real life?

Back

An example of perpendicular lines is the corner of a square or a rectangle.

Front

What is an example of parallel lines in real life?

Back

An example of parallel lines is the rails of a train track.

Front

If two lines intersect at an angle less than 90º, what type of lines are they?

Back

They are neither perpendicular nor parallel.

Front

What do we call a part of a line that has two endpoints?

Back

We call it a line segment.

Front

What do we call a line that starts at a point and goes on forever in one direction?

Back

We call it a ray.