Non-Congruent Alternate Interior Angles

Non congruent alternate interior angles are angles that are not the same measure and are on opposite sides of the transversal but inside the two lines. These angles are not the same measure and are opposite of the transversal but are inside the two lines. Ladders are used to reach things that are high up.

I found this image online at http://www.pastormattrichard.com/2012/08/saying-goodbye-to-ladder-encore.html