Shape

The shape (Old English: gesceap, created thing) of an object located in some space is a geometrical description of the part of that space occupied by the object, as determined by its external boundary – abstracting from location and orientation in space, size, and other properties such as colour, content, and material composition.

Mathematician and statistician David George Kendall writes:

In this paper ‘shape’ is used in the vulgar sense, and means what one would normally expect it to mean. We here define ‘shape’ informally as ‘all the geometrical information that remains when location, scale and rotational effects are filtered out from an object.’

Simple shapes can be described by basic geometry objects such as a set of two or more points, a line, a curve, a plane, a plane figure (e.g. square or circle), or a solid figure (e.g. cube or sphere). Most shapes occurring in the physical world are complex. Some, such as plant structures and coastlines, may be so arbitrary as to defy traditional mathematical description – in which case they may be analyzed by differential geometry, or as fractals.

Read more about Shape:  Rigid Shape Definition, Non-rigid Shape Definition, Colloquial Shape Definition, Philosophical Skepticism of Definitions, Shape Analysis, Similarity Classes

Famous quotes containing the word shape:

    Caught by the spectacle my mind turned round
    As with the might of waters; an apt type
    This label seemed of the utmost we can know,
    Both of ourselves and of the universe;
    And, on the shape of that unmoving man,
    His steadfast face and sightless eyes, I gazed,
    As if admonished from another world.
    William Wordsworth (1770–1850)

    Most revolutionaries are potential Tories, because they imagine that everything can be put right by altering the shape of society; once that change is effected, as it sometimes is, they see no need for any other.
    George Orwell (1903–1950)

    “Must a name mean something?” Alice asked doubtfully.
    “Of course it must,” Humpty Dumpty said with a short laugh: “my name means the shape I am—and a good handsome shape it is, too. With a name like yours, you might be any shape, almost.”
    Lewis Carroll [Charles Lutwidge Dodgson] (1832–1898)