Which of these statements describe properties of parallelograms ? check all that apply

Step-by-step explanation:

Following are some properties of parallelogram:

Opposite sides of a parallelogram are congruent.

Opposite angles of a parallelogram are congruent.

Consecutive angles of a parallelogram are supplementary.

If a parallelogram has 1 right angle, then it has 4 right angles.

The diagonals of a parallelogram bisect each other.

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Question is incomplete

Step-by-step explanation:

But the common properties of a parallelogram are:

1. Diagonals bisect at 90 degrees

2. Opposite angles are equal

3. Opposite sides are equal

4. Rotational symmetry of order 2

5. No lines of symmetry

6. Quadrilateral.

Hope this helps

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4

ab will be equal to