## Geometry: Common Core (15th Edition)

The Converse of the Alternate Exterior Angles Theorem tells us the lines are parallel when the alternate exterior angles are congruent. $3x-33=2x+26\longrightarrow$ definition of congruent $3x=2x+59\longrightarrow$ addition property of equality $x=59\longrightarrow$ subtraction property of equality