Parallel, Perpendicular, and Intersecting Lines

Front

What are parallel lines?

Back

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

Front

What are perpendicular lines?

Back

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

Front

What are intersecting lines?

Back

Lines that cross each other at any angle.

Front

What is a line?

Back

A straight path that goes on forever in both directions.

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

What is a ray?

Back

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

Front

How can you identify parallel lines in real life?

Back

Look for train tracks or the edges of a ruler.

Front

How can you identify perpendicular lines in real life?

Back

Look for the corners of a square or a piece of paper.

Front

What is the angle formed by perpendicular lines?

Back

90 degrees.

Front

Can two lines be both parallel and intersecting?

Back

No, parallel lines never meet, while intersecting lines cross each other.