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 vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

What is a linear pair?

Back

A pair of adjacent angles that are supplementary (add up to 180 degrees).

Front

How do you find the measure of an angle when given its corresponding angle?

Back

The measure of corresponding angles is equal.

Front

What is the relationship between alternate exterior angles?

Back

Alternate exterior angles are equal when two parallel lines are cut by a transversal.

Front

What is the sum of the angles in a linear pair?

Back

The sum is always 180 degrees.

Front

If two lines are parallel, what can be said about the consecutive interior angles?

Back

Consecutive interior angles are supplementary (add up to 180 degrees).