11.23 Parallel Lines with Transversal

Front

What are parallel lines?

Back

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

Front

What is a transversal?

Back

A line that crosses at least two other lines.

Front

What are corresponding angles?

Back

Angles that are in the same position on different parallel lines when cut by a transversal.

Front

What are alternate interior angles?

Back

Angles that are on opposite sides of the transversal and inside the two lines.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

How do you identify corresponding angles in a diagram?

Back

Look for angles that are in the same relative position at each intersection.

Front

What is the relationship between alternate interior angles when lines are parallel?

Back

They are equal.

Front

What is the relationship between corresponding angles when lines are parallel?

Back

They are equal.

Front

If two lines are cut by a transversal and the alternate interior angles are equal, what can be concluded?

Back

The lines are parallel.

Front

What is the sum of the angles on a straight line?

Back

180 degrees.