1.	In the figure, the segment is ____ to the circle.
		A.	tangent	B.	inscribed
		C.	interior	D.	supplementary
		Hint
	2.
		A.	90	B.	30
		C.	60	D.	45
		Hint
	3.	The figure shows two circles and ___________.
		A.	their congruent radii	B.	a common internal tangent
		C.	a common external tangent	D.	nothing else
		Hint
	4.	is tangent to circle S. LT = _______.
		A.		B.	18
		C.	12	D.
		Hint
	5.	In the figure, and are tangent to circle V at the points A and E, respectively, and X is the midpoint of . If the radius of circle V is 5, AE = 8, and XD = , find AD.
		A.		B.
		C.		D.	3
		Hint