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

If angle 6 is 25 degrees, what is angle 7?

Back

155 degrees

Front

What is the relationship between corresponding angles?

Back

They are equal when two parallel lines are 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

If angle L is 51 degrees, what is the measure of its corresponding angle?

Back

51 degrees.

Front

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

Back

180 degrees.

Front

If angle C is 116 degrees, what is the measure of its alternate interior angle?

Back

116 degrees.

Front

What are consecutive interior angles?

Back

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

Front

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

Back

Certain pairs of angles will be equal or supplementary.