1.	ABCD is a parallelogram. What are the coordinates of C?
		A.	(a, c)	B.	(b, c)
		C.	(b, a + c)	D.	(a + b, c)
		Hint
	2.	Kayla wants to prove that the quadrilateral QRST is a parallelogram. How should she begin proving this in a coordinate proof?
		A.	Draw the diagonals of the quadrilateral.
		B.	Find the measure of the interior angles of the quadrilateral.
		C.	Find the slopes of the opposite segments.
		D.	Find the midpoints of each segment.
		Hint
	3.	Find the x-coordinate of R if PQRS is a rectangle.
		A.	2b	B.	a
		C.	2a	D.	b
		Hint
	4.	What are the coordinates of S if PQRS is a rectangle?
		A.	(-a, b)	B.	(a, -b)
		C.	(-a, -b)	D.	(a, b)
		Hint
	5.	Points A, B, C, and D are the midpoints of , , , and respectively. What is the most specific description of quadrilateral ABCD?
		A.	square	B.	trapezoid
		C.	rectangle	D.	parallelogram
		Hint