Mathematics, 08.12.2021 22:00, monstergirl25

and are tangent to circle C and circle F. The points of tangency are A, B, D, and E. If m∠DFE = 140°, what is m∠ACB?

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and are tangent to circle C and circle F. The points of tangency are A, B, D, and E. If m∠DFE = 140°...