Angle Relationships When Parallel Lines are Cut by a Transve

Front

What are alternate interior angles?

Back

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

Front

Identify a pair of alternate interior angles in a diagram with parallel lines cut by a transversal.

Back

For example, if the angles are labeled as ∠2 and ∠7, they are alternate interior angles.

Front

What are corresponding angles?

Back

Angles that are in the same position on two parallel lines in relation to a transversal.

Front

Identify a pair of corresponding angles in a diagram with parallel lines cut by a transversal.

Back

For example, if the angles are labeled as ∠1 and ∠5, they are corresponding angles.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

Identify a pair of vertical angles in a diagram with intersecting lines.

Back

For example, if the angles are labeled as ∠4 and ∠6, they are vertical angles.

Front

What are alternate exterior angles?

Back

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

Front

Identify a pair of alternate exterior angles in a diagram with parallel lines cut by a transversal.

Back

For example, if the angles are labeled as ∠1 and ∠8, they are alternate exterior angles.

Front

What is the relationship between corresponding angles when two parallel lines are cut by a transversal?

Back

Corresponding angles are equal.

Front

What is the relationship between alternate interior angles when two parallel lines are cut by a transversal?

Back

Alternate interior angles are equal.