Transversals & Parallel Lines

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What is the measure of a straight angle?

Back

180 degrees.

Front

What are alternate interior angles?

Back

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

Front

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

Back

They are equal.

Front

What is the value of the angles in a linear pair?

Back

They add up to 180°.

Front

What are vertical angles?

Back

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

Front

If angle P measures 60 degrees, what is the measure of its corresponding angle on the other parallel line?

Back

60 degrees.

Front

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

Back

They are supplementary (add up to 180°).

Front

What is the value of x if angle 1 is 40 degrees and angle x is a corresponding angle?

Back

40 degrees.

Front

What are exterior angles?

Back

Angles that are outside the two lines cut by a transversal.