What Are Consecutive Angles?

When two lines are cut by a transversal, the pair of angles on one side of the transversal and inside the two lines are called the consecutive interior angles. In the figure, the angles 3 and 5 are consecutive interior angles.

Do consecutive angles equal 180?

The "consecutive interior angle theorem" states that if a transversal intersects two parallel lines, each pair of consecutive interior angles are supplementary, that is, their sum is 180°.

Are consecutive angles equal?

Do Consecutive Angles Equal Each Other? No, consecutive angles are not equal to each other. Their sum is 180 degrees. The only case when they can be equal is in a rectangle or when a transversal interacts with two parallel lines at 90 degrees angle.