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

Can parallel lines ever meet?

Back

No, parallel lines never meet.

Front

What is an example of perpendicular lines?

Back

The lines that form the letter 'T'.

Front

What is an example of intersecting lines?

Back

The lines that form the letter 'X'.

Front

How can you identify parallel lines?

Back

They will have the same slope in a graph.

Front

How can you identify perpendicular lines?

Back

The product of their slopes will be -1.

Front

What is the angle between perpendicular lines?

Back

90 degrees.

Front

What happens when two lines are neither parallel nor perpendicular?

Back

They are called intersecting lines.