14. Given: ABCD is a parallelogram The diagonals of the parallelogram intersect at T. (a) If AT = 2x-1 and AC = 3x + 5, what is TC? D (b) If mZABC = 3y +5 and MZADC = 5y - 45, what is mzABC and mZBCD? (c) If AB = 3z + 1, DC = z + 7, and AD = 2z, what is BC?

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