9+ Non Congruent Alternate Interior Angles. The given lines are parallel and according to the alternate interior angles theorem, the given angle of measure 85° and ∠x are congruent alternate interior angles. In geometry, there is a special kind of angles known as alternate angles.
Congruent alternate interior angles are angles produced by a transversal intersecting two parallel lines. If a transversal intersects two parallel. The two given angles are alternate interior angles and equal.
