1.   How many faces does an octahedron have?
    A. 8 B. 6
    C. 12 D. 4
    Hint

  2.   Which description corresponds to the boundary below?
   
    A. all points in a plane that are 4 units from a given point in that plane
    B. all points in a plane that are 4 units from a given segment in that plane
    C. all lines in a plane parallel to a given line in that plane
    D. all points in space that are 4 units from a given point
    Hint

  3.   What is the locus of all points in a plane that are equidistant from two distinct points X and Y in that plane?
    A. perpendicular bisector of B. circle with center X
    C. midpoint of D. circle with center Y
    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. The interior of a sphere of radius 4.
    B. The interior region of a circle of radius 4.
    C. A sphere of radius 4.
    D. A circle of radius 4.
    Hint



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