1.	The quadrilateral below is a parallelogram because_______.
		A.	both pairs of opposite sides are congruent
		B.	it has four sides
		C.	the diagonals bisect each other
		D.	both pairs of opposite angles are congruent
		Hint
	2.	Find the values of x and y that ensure that the quadrilateral is a parallelogram.
		A.	x = 16, y = 26	B.	x = 12, y = 13
		C.	x = 16, y = 12	D.	x = 13, y = 12
		Hint
	3.	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.	No. is not parallel to .
		D.	Yes. The two sets of opposite sides are parallel.
		Hint
	4.	What value of ensures that QRST is a parallelogram?
		A.	37°	B.	63°
		C.	36°	D.	117°
		Hint
	5.	Find the values of x. and y that ensure that LMNO is a parallelogram.
		A.	x = , y =	B.	x = , y = 4
		C.	x = 4, y =	D.	x = 8, y = 1
		Hint