If, in a quadrilateral, each pair of opposite sides is equal, then the quadrilateral is definitely a
rectangle trapezium kite parallelogram
A : 
B : C : D : 
can't it be a rectangle?????
If, in a quadrilateral, each pair of opposite sides is equal, then the quadrilateral is definitely a parallelogram.
It may also be a rectangle but it is definitely a parallelogram as it satisfies all the condition of a parallelogram but doesnot tells anything about the angles of this quadrilateral. So, we cannot conclude that it is a rectangle.