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