It's definitely a parallelogram, and also definitely a rhombus. And if
one of its angles happens to be 90 degrees, then it's also a square.
Is a rhombus.
A square's opposite sides are parallel and all the sides are congruent.
rombus
A square
Not necessarily. They can, but don't have to. A quadrilateral which does have congruent sides is called a rhombus.
rhombus
Yes. It is still a quadrilateral as long as it still has four sides, and they can be congruent if all of the sides are equal. It does not mean that All of the angles have to be right.
An impossibility. By definition a quadrilateral with 4 congruent sides must have congruent adjacent angles.
A square.
A square.
A parallelogram has two pairs of congruent sides.
Square