Supplementary Angle Identification for ∠3

To determine which angle is supplementary to ∠3, we need to know that two angles are supplementary if the sum of their measures is 180 degrees.

Without a figure, we can’t ascertain the specific relationships between the angles. However, if you identify which angles form a straight line with ∠3 or are positioned such that their measures add up to 180 degrees, that angle would be the supplementary angle to ∠3.

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