3.4 Parallel lines cut by Transversal

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 intersects two or more lines at different points.

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 lines.

Front

What are alternate exterior angles?

Back

Angles that are on opposite sides 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 always congruent.

Front

If angle 1 is 135 degrees, what is the measure of angle 3 if they are corresponding angles?

Back

135 degrees.

Front

If angle 6 is 25 degrees, what is the measure of angle 7 if they are vertical angles?

Back

25 degrees.

Front

If angle 5 is 50 degrees, what is the measure of angle 6 if they are alternate interior angles?

Back

50 degrees.

Front

If angle 4 is 90 degrees, what is the measure of angle 8 if they are corresponding angles?

Back

90 degrees.