Parallel Lines and Transversals

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 in the same plane.

Front

What are Corresponding Angles?

Back

Angles that are in the same position on two 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 parallel lines.

Front

What are Alternate Exterior Angles?

Back

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

Front

What are Vertical Angles?

Back

Angles that are opposite each other when two lines cross; they are always equal.

Front

If two parallel lines are cut by a transversal, what can be said about the corresponding angles?

Back

They are equal.

Front

If angle A and angle B are alternate interior angles, what can be said about their measures?

Back

They are equal.

Front

If angle B measures 135 degrees, what is the measure of its corresponding angle?

Back

135 degrees.

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.