Which property is always true for a rhombus but not always true for a parallelogram?

The diagonals are perpendicular.

The opposite angles are equal.

The diagonals bisect each other.

The adjacent angles are supplementary.

I already know it isn't A, but I'm sort of confused.

Question

Which property is always true for a rhombus but not always true for a parallelogram?

The diagonals are perpendicular.

The opposite angles are equal.

The diagonals bisect each other.

The adjacent angles are supplementary.

I already know it isn't A, but I'm sort of confused.

anonymous · Answer

& one more, 
The side RS quadrilateral PQRS is drawn on a grid as shown.
 
Line drawn on a 4-quadrant grid joining points R(1, 6) and S(3, 2)
 
If quadrilateral PQRS is a square, which of these ordered pair could be a vertex?

(6, 4)

(7, 3)

(7, 4)


(6, 3)

anonymous · Answer

The opposite angles are equal. that is a false statement

anonymous · Answer

I think number two is (6,3)

anonymous · Answer

I believe you are right :)

directrix · Answer

@svanpatten --> Why did you eliminate this option "I already know it isn't A, but I'm sort of confused." At the following link, you'll find properties of a rhombus. Read through them, and I think you'll have the answer to the first question: http://www.coolmath.com/reference/rhombus.html