Which of the following is NOT a true statement?

Correct option is B

Solution:

Option A: All rectangles are parallelograms.

This is a true statement because a rectangle satisfies all the properties of a parallelogram: opposite sides are parallel, and opposite angles are equal.

Option B: Diagonals of a rectangle do not bisect each other.

This is NOT a true statement because the diagonals of a rectangle always bisect each other. This property is true for all parallelograms, including rectangles.

Option C: Opposite sides of a rectangle are congruent and parallel.

This is a true statement because opposite sides of a rectangle are equal in length and parallel.

Option D: Sum of any pair of adjacent angles of a rectangle is 180°. This statement is true.

The statement that is NOT true is Option B: Diagonals of a rectangle do not bisect each other.