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 intersects two or more lines.

Front

What are alternate exterior angles?

Back

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

Front

What are alternate interior angles?

Back

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

Front

What are corresponding angles?

Back

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

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

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

Back

They are congruent.

Front

If angle 5 is 70 degrees, what is the measure of angle 6 if angle 5 and angle 6 are corresponding angles?

Back

Angle 6 is also 70 degrees.

Front

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

Back

180 degrees.

Front

If two angles are supplementary, what is the relationship between their measures?

Back

Their measures add up to 180 degrees.