Parallel Lines and Transversals Angle Pairs 1

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 alternate interior angles?

Back

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

Front

What are corresponding angles?

Back

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

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 m∠2 = 61°, what is m∠6 if lines are parallel?

Back

m∠6 = 61° (alternate interior angles are equal).

Front

If m∠1 = 119°, what is m∠5 if lines are parallel?

Back

m∠5 = 119° (corresponding angles are equal).

Front

What is the sum of angles on a straight line?

Back

180°.

Front

What is the sum of angles around a point?

Back

360°.