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    Re: Mathematical Question
    From: Paul Hirose
    Date: 2002 Sep 19, 23:04 -0700

    "A plane that cuts the sphere divides it into two spherical segments
    and its surface into two spherical caps, which are equal if the
    section is a great circle." (from "The VNR Concise Encyclopedia of
    Mathematics")
    
    The illustrations make it more clear:
    
    spherical segment = the solid body "chopped off" from the sphere
    
    spherical cap = the curved surface of that body
    
    
    

       
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