Parallel Lines Cut by a 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 crosses at least two other lines.

Front

What are corresponding angles?

Back

Angles that are in the same position on different 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.

Front

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

Back

Angle 7 is also 25 degrees.

Front

If angle 6 is 25 degrees, what is the measure of angle 8 if they are corresponding angles?

Back

Angle 8 is also 25 degrees.

Front

If angle 6 is 25 degrees, what is the measure of angle 4 if they are alternate interior angles?

Back

Angle 4 is also 25 degrees.

Front

What is the sum of the measures of angles on a straight line?

Back

180 degrees.