Transversals and Angle Pairs

Front

What are congruent angles?

Back

Angles that have the same measure.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are always congruent.

Front

What are complementary angles?

Back

Two angles whose measures add up to 90 degrees.

Front

What are supplementary angles?

Back

Two angles whose measures add up to 180 degrees.

Front

What are corresponding angles?

Back

Angles that are in the same position on different parallel lines cut by a transversal; they are congruent.

Front

What are alternate interior angles?

Back

Angles that are on opposite sides of the transversal and inside the two lines; 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

What are alternate exterior angles?

Back

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

Front

What is a transversal?

Back

A line that intersects two or more lines at different points.

Front

What does it mean for lines to be skew?

Back

Lines that do not intersect and are not parallel; they exist in different planes.