23) What is the term for a quadrilateral if opposite sides are equal and parallel and all four sides are right angles?

24) What is the quadrilateral if all the four sides are equal, but only opposite angles are equal?

25) What is the quadrilateral if the two sides are parallel and all the four angles are different and the diagonals do not bisect at right angles?

26) What is the quadrilaterial if only one pair of opposite sides that are parallel?

27) What is the quadrilateral if opposite sides are equal and parallel?