In a parallelogram, if two adjacent angles are equal, then it is called

In a parallelogram, if two adjacent angles are equal, then it is called rectangle.

                          

1)Opposite angles are equal and the sum of any two adjacent angles is $180°$

2)Each diagonal of a rhombus divides it into two congruent isosceles triangle

3)The diagonals bisect each other perpendicularly.