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 crosses two or more other lines in the same plane.

Front

What are alternate exterior angles?

Back

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

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What are congruent angles?

Back

Angles that have the same measure.

Front

What is an acute angle?

Back

An angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

An angle that measures more than 90 degrees but less than 180 degrees.

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.

Front

What is a straight angle?

Back

An angle that measures exactly 180 degrees.

Front

If angle 2 is 70 degrees, what is the measure of angle 3 if they are corresponding angles?

Back

Angle 3 is also 70 degrees.