In this figure, ab∥cd and m∠2=60°.

what is m∠6?

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°
parallel lines a b and c d are cut by a transversal forming 8 angles labeled 1 to 8. the transversal intersecting line a b form angles 1, 2, 3, and 4 clockwise from top left. the transversal intersecting line c d form angles 5, 6, 7, 8 clockwise starting from top left.