Angles of Parallel Lines

Front

What is the relationship of vertical angles?

Back

Vertical angles are congruent (equal in measure).

Front

What defines corresponding angles when two lines are crossed by a transversal?

Back

Corresponding angles are equal in measure.

Front

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

Back

Alternate interior angles are congruent (equal in measure).

Front

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

Back

Alternate exterior angles are congruent (equal in measure).

Front

What is the definition of parallel lines?

Back

Two lines are considered parallel if they never intersect and have the same slope.

Front

What is the sum of the interior angles on the same side of a transversal?

Back

The sum of the interior angles on the same side of a transversal is supplementary (adds up to 180 degrees).

Front

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

Back

Consecutive interior angles are supplementary (add up to 180 degrees).

Front

How can you identify corresponding angles in a transversal situation?

Back

Corresponding angles are located in the same position at each intersection of the transversal with the two lines.

Front

What is the relationship of angles formed by two intersecting lines?

Back

The angles formed by two intersecting lines are vertical angles and are congruent.

Front

What happens to the angles when two lines are parallel and cut by a transversal?

Back

The corresponding angles are equal, alternate interior angles are equal, and consecutive interior angles are supplementary.