Answer:
D. Converse of the same side interior angles theorem.
Explanation: This is the correct answer on Edge 2021, just took the Unit test and made a 100%. Hope this helps ^-^.
The theorem that best justifies that e is parallel to f is the converse of the same side interior angles theorem, the correct option is D.
The lines that never intersect each other, and the distance between them is always constant are called Parallel Lines.
The slope of two parallel lines is equal to each other.
Two parallel lines intersected by transversal form various angles namely, alternate interior angles, and alternate exterior angles, etc.
When two lines are intersected by a transversal such that, the alternate interior angles are equal and by the converse of the alternate interior angles theorem, if the two angles are equal, line e and f must be parallel.
To know more about Parallel Lines
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