1.	is a diameter. Find .
		A.	90	B.	360
		C.	270	D.	180
		Hint
	2.	In circle H, and GI = 15. Find HK and
		A.	15; 180	B.	7.5; 180
		C.	7.5; 90	D.	15; 90
		Hint
	3.
		A.	32	B.	46
		C.	23	D.	11.5
		Hint
	4.	If P is the center of the circle, find the value of x.
		A.	23	B.	-25
		C.	34	D.
		Hint
	5.	Find x.
		A.	100	B.	90
		C.	110	D.	80
		Hint