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 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 same side interior angles?

Back

Angles that are on the same side of the transversal and inside the two lines.

Front

What is the sum of supplementary angles?

Back

Supplementary angles add up to 180°.

Front

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

Back

135 degrees.

Front

If angle 6 is 25 degrees, what is angle 7 if they are same side interior angles?

Back

155 degrees.

Front

What is the relationship between alternate exterior angles when lines are parallel?

Back

They are equal.