1.	The diameter of a circle is 8. What is the radius?
		A.	16	B.
		C.		D.	4
		Hint
	2.
		A.	12.3	B.	7.8
		C.	1.6	D.	24.6
		Hint
	3.
		A.	45	B.	30
		C.	90	D.	60
		Hint
	4.	Find an equation of the circle that has a diameter with endpoints at (6, 10) and (-2, 4).
		A.	(x - 4)2 + (y - 3)2 = 53	B.	(x - 2)2 + (y - 7)2 = 25
		C.	(x - 6)2 + (y - 10)2 = 100	D.	(x + 2)2 + (y - 4)2 = 100
		Hint
	5.	Find the exact circumference of the circle in the figure.
		A.	8.5	B.	4.25
		C.	17	D.	17
		Hint
	6.	In the figure, , and . If MP = 7, then PQ = ____.
		A.	24	B.	25
		C.	14	D.	7
		Hint
	7.	In the figure, L and R lie on circle P. Is LRP inscribed in circle P?
		A.	No; only two of the points lie on circle P.
		B.	Yes; LRP is completely contained in circle P.
		C.	No; triangles cannot be inscribed.
		D.	Yes; P is the center of the circle and is a vertex of the triangle.
		Hint
	8.	What can you assume from the following figure?
		A.	mJ + mGKI = 180.
		B.	GHK is isosceles.
		C.	is a diameter of the circle.
		D.	H is the center of the circle.
		Hint
	9.	If is a diameter of the circle, MR = 12, and the circle has radius 10, then find NM.
		A.	16	B.	4
		C.	8	D.	6.6
		Hint
	10.
		A.	70	B.	55
		C.	110	D.	125
		Hint
	11.	Find mNAL.
		A.	150	B.	78
		C.	96	D.	21
		Hint
	12.	In the figure, and are ______.
		A.	external secant segments	B.	secant segments
		C.	secants	D.	tangent segments
		Hint
	13.	Find the value of x.
		A.	12	B.	6
		C.	7.5	D.	3
		Hint
	14.	Which is an equation of the circle with center at (11, -19) and diameter 12?
		A.	(x - 11) 2 + (y + 19) 2 = 144
		B.	(x - 11) 2 + (y + 19) 2 = 36
		C.	(x + 11) 2 + (y - 19) 2 = 36
		D.	(x + 11) 2 + (y - 19) 2.= 144
		Hint
	15.
		A.	57	B.	114
		C.	48	D.	24
		Hint
	16.	is tangent to C. Find x.
		A.		B.
		C.	6	D.	12
		Hint