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Question
Given below is a parallelogram ABCD. Complete each statement along with the definition or property used.
(i) AD =
(ii) ∠DCB =
(iii) OC =
(iv) ∠DAB + ∠CDA =
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Solution
The correct figure is
\[(i)\]\[AD = BC (\text{ opposite sides of a parallelogram are equal })\]
\[(ii)\] \[\angle DCB = \angle BAD \left( \text{ opposite angles are equal } \right)\]
\[(iii)\] \[OC = OA \left( \text{ diagonals of a prallelogram bisect each other } \right)\]
\[(iv)\] \[\angle DAB + \angle CDA = 180° \left( \text{ the sum of two adjacent angles of a parallelogram is } {180}^0 \right)\]
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