Can a quadrilateral ABCD be a parallelogram if : `angle A=70^@`and `angleC=65^@`?

Can a quadrilateral ABCD be a parallelogram if : angle D+angleB=180^@ ?

Can a quadrilateral ABCD be a parallelogram if :AB=DC=8cm,AD=4cm and BC =4.4cm?

In the fig. ABCD and AEFG are the parallelogram if angleC=58^@ , find angleF

In a quadrilateral ABCD, AO and BO are bisectors of angleA and angle B respectively. Prove that angleAOB=1/2(angleC+angleD)

Given statement below. Identify the statement given below as contrapositive or converse of each other. If a quadrilateral is a parallelogram, then its diagonals bisect each other. (i) If the diagonals of a quadrilateral do not bisect each other, then the quadrilateral is not a parallelogram. (ii) If the diagonals of a quadrilateral bisect each other, then it is a parallelogram.

In a quadrilateral ABCD, if AO and BO are the bisectors angleA and angleB respectively, angleC=70^@ and angleD=30^@ then angleAOB =

ABCD is a cyclic quadrilateral in which AC and BD are its diagonals.If angleDBC = 70^@ and angle BAC = 30^@ find angleBCD