1.	What is the locus of all points in a plane that are 3 units from a given point in that plane?
		A.	segment of length 3 units.	B.	sphere of radius 3 units.
		C.	circle of radius 3 units.	D.	circle of radius 9 units.
		Hint
	2.	What is the locus of all points in space that are 6 units from a given point?
		A.	circle of radius 6 units.
		B.	circle of radius 36 units.
		C.	sphere of radius 6 units.
		D.	sphere of radius 36 units.
		Hint
	3.	Which description corresponds to the boundary below?
		A.	all points in a plane that are 4 units from a given segment in that plane
		B.	all points in space that are 4 units from a given point
		C.	all points in a plane that are 4 units from a given point in that plane
		D.	all lines in a plane parallel to a given line in that plane
		Hint
	4.	What is the locus of points in space that are 2 units from a given line segment 7 units long?
		A.	A sphere of radius 7.
		B.	A right cylinder with height 7 and radius 2 and hemispheres with radius 2 on each end of the cylinder.
		C.	A right cylinder of radius 1 and height 7 and hemispheres with radius 1 on each end of the cylinder.
		D.	A sphere of radius 3.5.
		Hint
	5.	What is the locus of points in a plane 3 units from the midpoint of a segment 12 units long?
		A.	A sphere of radius 3 units.
		B.	A circle of radius 3 units.
		C.	A sphere of radius 6 units.
		D.	A circle of radius 6 units.
		Hint