Identify Angle Pairs With Parallel Lines And Transversals

Front

What are corresponding angles?

Back

Angles that are in the same position on parallel lines in relation to a transversal. If the lines are parallel, corresponding angles are equal.

Front

What are alternate interior angles?

Back

Angles that are on opposite sides of the transversal and inside the two lines. If the lines are parallel, alternate interior angles are equal.

Front

What are alternate exterior angles?

Back

Angles that are on opposite sides of the transversal and outside the two lines. If the lines are parallel, alternate exterior angles are equal.

Front

What are same side interior angles?

Back

Angles that are on the same side of the transversal and inside the two lines. If the lines are parallel, same side interior angles are supplementary (add up to 180 degrees).

Front

What are same side exterior angles?

Back

Angles that are on the same side of the transversal and outside the two lines. If the lines are parallel, same side exterior angles are supplementary.

Front

What is the Alternate Interior Angles Theorem?

Back

If two parallel lines are cut by a transversal, then each pair of alternate interior angles is equal.

Front

What is the Alternate Exterior Angles Theorem?

Back

If two parallel lines are cut by a transversal, then each pair of alternate exterior angles is equal.

Front

What is the Corresponding Angles Postulate?

Back

If two parallel lines are cut by a transversal, then each pair of corresponding angles is equal.

Front

What is the Alternate Interior Angles Converse?

Back

If two lines are cut by a transversal and the alternate interior angles are equal, then the lines are parallel.

Front

What is the Alternate Exterior Angles Converse?

Back

If two lines are cut by a transversal and the alternate exterior angles are equal, then the lines are parallel.