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    Re: Mathematical Question
    From: Robert Eno
    Date: 2002 Sep 19, 21:09 -0400

    Ok, let's say that it has a lensatic shape and a circular base. What would
    it be called?
    I may have erred in my description. I guess and arc is two dimensional
    whereas it's spherical equivalent would be three dimensional.
    ----- Original Message -----
    From: Brian Whatcott 
    Sent: Thursday, September 19, 2002 9:02 PM
    Subject: Re: Mathematical Question
    > At 07:30 PM 9/19/02, you wrote:
    > >Greetings list,
    > >
    > >Given the rather esoteric nature of some of the recent discussions, I am
    > >hopeful that one of you will have the answer to a long-standing question
    > >of mine.
    > >
    > >What is the term used to describe a small 2 dimensional section of a
    > >sphere? Or to put it another way, if a small section of a circle is
    > >an "arc", what is the equivalent in a sphere?
    > >
    > A spherical surface may have an irregular perimeter, or be a
    > spherical triangle, or spherical polygon, or a spherical segment of one
    >   according to
    > Math Dictionary, James & James, Van Nostrand.
    > Brian Whatcott
    >    Altus OK                      Eureka!

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