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Given below is a parallelogram A B C Ddo...

Given below is a parallelogram `A B C Ddot\ ` Complete each statement along with the definition or property used. (I) `A D=` (ii) `/_D C B=` (iii ) `O C=` (iv) `/_D A B+/_C D A=`

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In a parallelogram opposite sides and angles are equal.
So,
(i) `AD = BC`
(ii)`/_DCB = /_BAD`
(iii)`OC = OA` (As diagonals of a parallelogram bisects each other)
(iv)`/_DAB+/_CDA = /_DCB+/_ABC = 180^@`
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