Fill in the gaps.
The diagonals of parallelogram _______ each other.

Using vector method show that the diagonals of a parallelogram bisect each other.

Fill in the gaps. If one angle of a parallelogram is 90^@ , then it will be _____.

Prove that if the two diagonals of any parallelogram intersect each other orthogonally, then the parallelogram is a rhombus.

Prove that if the lengths of the two diagonals of a parallelogram be equal , then the parallelogram is a rectangle.

Fill in the gaps. Diagonals of a rhombus bisect each other at ________.

Fill in the gaps. Square has ______ diagonals.

Fill in the gaps. The opposite sides of rectangle are _____.

Fill in the blanks: Cycline parallelogram is always._____

Fill in the gaps. Rhombus is a special type of __________.