No.
Yes.
always
Yes. And a square is always a rhombus.
Yes- a square is always a special kind of parallelogram.
the diagonal in a paralleogram is not equal but the diagonals in the rectangle are congruent this is because the opposite sides of a parallelogram and rectangle are same parallel to each other but the adjacent sides of a parallelogram is not perpendicular where as the adjacent sides of rectangle is perpendicular to each other.
a paralleogram has four sides
Some paralleograms are rectangles. A right paralleogram is a rectangle. In the case of a rectangle, all angles formed by the sides are right angles and opposite sides are parallel. The sum of adjacent angles in a parallelogram is 180 degrees.
Rectangle always
A square is always a rectangle. A rectangle is not always a square. And both are quadrilaterals.
no
A rectangle is sometimes a square, but not always. When it is, it's also a rhombus. A rhombus is sometimes a square, but not always. When it is, it's also a rectangle. A square is always a rhombus and always a rectangle. Rectangles, rhombera, and squares are always parallelograms and quadrilaterals.