A square is a special case of a parallelogram.
as a paralellogram is a skewed square, it is a quadrilateral. it has four sides
Not possible... in order for it to have four right-angles, it would resemble a square or rectangle.
Diamond and parellogram
Yes all quadrilaterals can tessellate
They have the same number of sides, namely 4. A square is a special case of a parallelogram. All squares are also parallelograms but all parallelograms need not be squares.
The question cannot be answered without further information. Have the rectangle and parallelogram the same length/ base? If not, what is the length of the rectangle and the base of the parallelogram?