Alternate Exterior Angles

Alternate Exterior Angles

Angles on opposite sides of a transversal and outside the two lines it intersects.


In these figures, angles 2 and 8 are alternate exterior angles.


When lines are parallel, such as lines d and e, the alternate exterior angles are congruent.

In the figure on the right, angles 2 and 8 have the same measure, as lines d and e are parallel lines. These angles are congruent.

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