Transversals and Parallel Lines

Front

What are parallel lines?

Back

Two lines that run in the same direction and will never intersect.

Front

What is the value of x if the angles are supplementary and one angle is 160 degrees?

Back

x = 20 degrees.

Front

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

Back

Corresponding angles are equal.

Front

What does it mean for two angles to be congruent?

Back

Two angles are congruent if they have the same measure.

Front

If two angles are complementary, what is the sum of their measures?

Back

The sum of their measures is 90 degrees.

Front

If angle A is 70 degrees, what is the measure of its supplementary angle?

Back

The supplementary angle is 110 degrees.

Front

What are alternate interior angles?

Back

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

Front

If two angles are vertical angles, what can be said about their measures?

Back

Vertical angles are always equal.

Front

What is the measure of each angle if two angles are complementary and one angle is 30 degrees?

Back

The other angle is 60 degrees.

Front

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

Back

Alternate exterior angles are equal.