Parallel Lines Cut by a Transversal

Front

What is a line that intersects two or more lines at different points called?

Back

Transversal

Front

What are angles that are opposite each other when two lines intersect called?

Back

Vertical Angles

Front

If two angles are on the same side of the transversal and inside the parallel lines, what are they called?

Back

Same-side interior angles

Front

What is the sum of the measures of supplementary angles?

Back

180 degrees

Front

If two angles are on opposite sides of the transversal and inside the parallel lines, what are they called?

Back

Alternate interior angles

Front

What is the relationship between corresponding angles when a transversal crosses parallel lines?

Back

Corresponding angles are equal.

Front

If the measure of angle 4 is 70 degrees, what is the measure of angle 6 if they are same-side interior angles?

Back

110 degrees

Front

What do you call angles that are formed when a transversal crosses two parallel lines and are located outside the parallel lines?

Back

Exterior angles

Front

What is the relationship between alternate exterior angles when a transversal crosses parallel lines?

Back

Alternate exterior angles are equal.

Front

What is the term for angles that add up to 90 degrees?

Back

Complementary angles