Question

what can you about the quadrilateral abcd . it is a rectangle ? justify your answer

Answer 1

NO, it is not rectangle because all angles of the quarilateral is equal to each other.It means all angles is =90°

Answer 2

If the two pairs of lines are parallel then it is a rectangle .
In quadrilateral ABCD
There are two pair of opposite parallel sides
therefore it is a parallelogram .

In parallelogram ABCD
Angle B is 90° therefore it is rectangle