The lines that are parallel in the image given are: Lines e and f are parallel because their alternate exterior angles are congruent.
What are Alternate Exterior Angles?
When a transversal intersects two parallel lines, the alternate exterior angles that are formed are congruent to each other.
Conversely, if the alternate exterior angles formed are congruent, then both lines that are cut by a transversal are parallel.
Therefore, the lines that are parallel in the image given are: Lines e and f are parallel because their alternate exterior angles are congruent.
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