How can you prove that line 1 perpendicularly bisects lines 2 and 3 if 2 and 3 are parallel

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Band c because if a graph has 3 negative parts and only 1 positive part it would be able to go in between the positive and negitive

If two sides of a triangle are congruent, then the angles opposite those sides are congruent. the converse of the base angles theorem, states that if two angles of a triangle are congruent, then sides opposite those angles are congruent.