If the transversal cuts across parallel lines (the usual case) then exterior angles are supplementary (add to 180°). So in the figure above, as you move points A or B, the two angles shown always add to 180°.

Are consecutive exterior angles the same?

Consecutive interior angles lie inside on the same side of a transversal. Consecutive exterior angles lie outside on the same side of a transversal.

Are consecutive exterior angles congruent?

If two parallel lines are cut by a transversal, then: corresponding angles are congruent, alternate interior angles are congruent, alternate exterior angles are congruent, consecutive (same side) interior angles are supplementary, and consecutive (same side) exterior angles are supplementary.

What do you mean by 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.

What is the consecutive angles theorem?

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

What angle adds up to 180?

Two angles are called supplementary when their measures add up to 180 degrees.

Is consecutive exterior congruent or supplementary?

Consecutive exterior angles are supplementary (the consecutive exterior angles theorem) Alternate interior angles are congruent (the alternate interior angles theorem)

Are consecutive angles are supplementary?

Any pair of consecutive angles are supplementary . All angles are right angles. Opposite angles are congruent. Any pair of consecutive angles are supplementary.