Parallel Lines Cut by a transversal

Front

What is the angle relationship when two parallel lines are cut by a transversal and the angles are on opposite sides of the transversal and inside the parallel lines?

Back

Alternate Interior Angles

Front

What is the angle relationship when two parallel lines are cut by a transversal and the angles are on opposite sides of the transversal and outside the parallel lines?

Back

Alternate Exterior Angles

Front

What is the angle relationship when two parallel lines are cut by a transversal and the angles are on the same side of the transversal and inside the parallel lines?

Back

Consecutive Interior Angles

Front

What is the angle relationship when two parallel lines are cut by a transversal and the angles are on the same side of the transversal and outside the parallel lines?

Back

Consecutive Exterior Angles

Front

What is the angle relationship when two lines intersect and the angles are opposite each other?

Back

Vertical Angles

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

What is the relationship between corresponding angles when two parallel lines are cut by a transversal?

Back

Corresponding angles are equal.

Front

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

Back

Alternate exterior angles are equal.

Front

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

Back

Consecutive interior angles are supplementary.