A kite.
It can, but it doesn't have to.If it does, then it's a special parallelogram, called a "rhombus".If the rhombus has right angles inside, then it's a special rhombus, called a "square".Both of these things are still parallelograms.
square, rhombus, rectangle, and parallelogram.
The answer to that is definitely a parallelogram. The key word is parallel.
No, only when all of the angles are equal and 90 degrees. A rhombus is, among other things, a quadrilateral with equal sides (equilateral). A square is both equilateral and equiangular.