1.	The quadrilateral below is a parallelogram because_______.
		A.	both pairs of opposite sides are congruent
		B.	both pairs of opposite angles are congruent
		C.	it has four sides
		D.	the diagonals bisect each other
		Hint
	2.	Which of the following does not guarantee that a quadrilateral is a parallelogram?
		A.	Both pairs of opposite sides are congruent.
		B.	Both pairs of opposite angles are congruent.
		C.	A pair of consecutive sides are congruent.
		D.	Both pairs of opposite sides are parallel.
		Hint
	3.	Find the values of x and y that ensure that the quadrilateral is a parallelogram.
		A.	x = 2, y = 4	B.	x = 4, y = 2
		C.	x = 2, y = 1	D.	x = 1, y = 1
		Hint
	4.	Which are the coordinates of the vertices of a parallelogram?
		A.	(-3, 2), (-1, 3), (2, 2), (0, 1)
		B.	(0, 0), (1, 2), (6, 2), (4, 0)
		C.	(-2, 1), (-3, 2), (-4, 3), (1, 1)
		D.	(4, 1), (3, 5), (0, -2), (3, 3)
		Hint
	5.	The coordinates of the vertices of WXYZ are W(-3, 3), X(6, 6), Y(1, 0), and Z(-5, -2).Determine if WXYZ is a parallelogram. Explain.
		A.	Yes. The two diagonals bisect each other.
		B.	No. is not parallel to .
		C.	Yes. The two sets of opposite sides are parallel.
		D.	No. is not parallel to .
		Hint