1.	Refer to circle C. Find the value of x.
		A.		B.	13
		C.		D.
		Hint
	2.
		A.	30	B.	60
		C.	45	D.	90
		Hint
	3.
		A.	4	B.	5
		C.	6	D.	7
		Hint
	4.	The figure shows two circles and ___________.
		A.	their congruent radii	B.	a common external tangent
		C.	a common internal tangent	D.	nothing else
		Hint
	5.	The figure shows a quadrilateral circumscribed about a circle. Find the value of x.
		A.	30	B.	32
		C.	34	D.	28
		Hint