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Thread: What is this figure called?

  1. #1
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    Question What is this figure called?

    Hi!

    For a geometric abstraction, I created this figure using a graphics application.

    What is this figure called?-unknown.jpg

    It looks like a filled half parabola. In geometry, what is it called?

    Thank you!

    Dr. T

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  2. #2
    Member Walagaster's Avatar
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    Smile Re: What is this figure called?

    It doesn't really look like a parabola. But, hey, it's a piece of art that you made so you can call it anything you wish. How about "bloody fingernail"?
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  3. #3
    Junior Member Cervesa's Avatar
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    Re: What is this figure called?

    Meet Arthur.

    He goes by "Art" for short.
    Attached Thumbnails Attached Thumbnails What is this figure called?-art.jpg  
    Thanks from topsquark
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  4. #4
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    Re: What is this figure called?

    Arthur is li'l Red Riding Hood'd bf?
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  5. #5
    Super Member harpazo's Avatar
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    Re: What is this figure called?

    Quote Originally Posted by DoctorTR View Post
    Hi!

    For a geometric abstraction, I created this figure using a graphics application.

    Click image for larger version. 

Name:	UNKNOWN.jpg 
Views:	4 
Size:	46.3 KB 
ID:	39284

    It looks like a filled half parabola. In geometry, what is it called?

    Thank you!

    Dr. T

    Why not call it a parabola? It looks like a parabola to me.
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  6. #6
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    Re: What is this figure called?

    Quote Originally Posted by harpazo View Post
    Why not call it a parabola? It looks like a parabola to me.
    For one thing, it's finite in size, and a parabola is not. Also, the figure
    contains an interior, which the parabola is just the curve.
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  7. #7
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    Re: What is this figure called?

    Even for the outside, how could you tell whether it is a parabola or part of an ellipse?
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  8. #8
    Super Member harpazo's Avatar
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    Re: What is this figure called?

    Quote Originally Posted by greg1313 View Post
    For one thing, it's finite in size, and a parabola is not. Also, the figure
    contains an interior, which the parabola is just the curve.
    I was thinking about the thick, black curve in the U shape.
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