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 is the relationship between alternate interior angles when two parallel lines are cut by a transversal?

Back

They are congruent.

Front

What are consecutive interior angles?

Back

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

Front

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

Back

They are equal.

Front

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

Back

180 degrees.

Front

If two angles are supplementary, what is their relationship?

Back

Their measures add up to 180 degrees.

Front

What is the definition of congruent angles?

Back

Angles that have the same measure.

Front

What is the definition of a right angle?

Back

An angle that measures exactly 90 degrees.