Question

Given a parallelogram $ABCD$. Complete each statement along with the definition or property used.
(i) $AD=$

(ii) $\angle DCB=$

(iii) $OC=$

(iv) $m\angle DAB+m\angle CDA=$

Answer 1

(i) $AD=BC$

[Opposite sides are equal in parallelogram]

(ii) $\angle DCB=\angle DAB$

[Opposite angles are equal]

(iii) $OC=OA$

[Diagonals bisect each other]

(iv) $m\angle DAB+m\angle CDA={180}^{\circ }$

[Adjacent angles are supplementary]