Angle Relationships with Parallel Lines and a Transversal

Front

What are Alternate Exterior Angles?

Back

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

Front

What are Alternate Interior Angles?

Back

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

Front

What are Corresponding Angles?

Back

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

Front

What are Same-Side Interior Angles?

Back

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

Front

What are Same-Side Exterior Angles?

Back

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

Front

What are Vertical Angles?

Back

Angles that are opposite each other when two lines intersect; they are equal.

Front

If two parallel lines are cut by a transversal, what can be said about the Alternate Interior Angles?

Back

They are equal.

Front

If two parallel lines are cut by a transversal, what can be said about the Corresponding Angles?

Back

They are equal.

Front

If two parallel lines are cut by a transversal, what can be said about the Same-Side Interior Angles?

Back

They are supplementary (add up to 180 degrees).

Front

If ∠1 and ∠8 are Alternate Exterior Angles, what can be said about their measures?

Back

They are equal.