Which of the following statements are not true about parallelograms? Select all that apply.

1. The area of a parallelogram is half of the product of its length and width.

2. The angles formed by the diagonals of a parallelogram are complementary to each
other.

3. The diagonals of a parallelogram bisect each other.

4. A diagonal divides a parallelogram into two congruent triangles.

5. Two consecutive angles of a parallelogram are supplementary.