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 alternate exterior angles?

Back

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

Front

What are alternate interior angles?

Back

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

Front

What are corresponding angles?

Back

Angles that are in the same position on two different lines cut by a transversal.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines cross.

Front

If angle 8 is 63 degrees, what is angle 2?

Back

63 degrees because angle 8 & 2 are alternate exterior angles.

Front

If angle 1 = 27°, what is angle 4?

Back

27° because angle 1 and angle 4 are corresponding angles.

Front

What is the relationship between same side interior angles?

Back

They are supplementary, meaning they add up to 180 degrees.

Front

How do you identify parallel lines in a figure?

Back

Look for lines that are equidistant and do not intersect.