Parallel Lines cut by a Transversal Relationships

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 two or more other lines in the same plane.

Front

What are corresponding angles?

Back

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

Front

What are alternate interior angles?

Back

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

Front

What are alternate exterior angles?

Back

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

Front

What are consecutive interior angles?

Back

Angles that are on the same side of the transversal and inside the two parallel lines.

Front

If m∠3 = 81°, what is m∠6?

Back

m∠6 = 81° (Corresponding angles are equal).

Front

If m∠7 = 62°, what is m∠1?

Back

m∠1 = 118° (Alternate interior angles are supplementary).

Front

If m∠4 = 123°, what is m∠7?

Back

m∠7 = 57° (Consecutive interior angles are supplementary).

Front

If m∠3 = 35°, what is m∠8?

Back

m∠8 = 145° (Alternate exterior angles are equal).