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# 1.Given a parallelogram ABCD. Complete each statement along with the definition or property used. (i) AD = ………… (ii) ∠DCB = ……… (iii) OC = ……… (iv) m?DAB + m∠CDA = ……..

(iv) m∠DAB + m∠CDA = $$180^{\circ}$$ as the adjacent angles of a parallelogram are supplementary.