1.
How many faces does an octahedron have?
A.
12
B.
6
C.
8
D.
4
Hint
2.
What is the shape of the intersection of a sphere and a horizontal plane?
A.
square
B.
circle
C.
trapezoid
D.
triangle
Hint
3.
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 36 units.
D.
sphere of radius 6 units.
Hint
4.
What is the locus of all points in a plane that are 7 units from the line
in that plane?
A.
a line parallel to
B.
a line perpendicular to
C.
a plane parallel to
D.
two lines parallel to
Hint
5.
What is the locus of points in a plane that are less than 4 units from a given point in the plane?
A.
A sphere of radius 4.
B.
The interior region of a circle of radius 4.
C.
The interior of a sphere of radius 4.
D.
A circle of radius 4.
Hint