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1. Angle 2 and Angle 3 are a linear pair. Angle 3 and Angle 4 are a linear pair.
Reason: Given
2. Angle 2 and Angle 3 are supplementary. Angle 3 and Angle 4 are Supplementary.
Reason:?
3. Angle 2 is congruent to Angle 4.
Reason: ?