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



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