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.
Other articles related to "shape, shapes":
... Tetrahedrons and other shapes are available ... Cartons with a hexagonal or octagonal cross sections are sometimes used for specialty items ...
... markings and facial features, such as fur color and patterning, ear shape, and face shape and pigmentation ... sex can usually be determined within a week or so of birth, based on the shape and positioning of their genitalia ...
... He tried streamlining the shape to reduce drag, but this resulted in a disc that was more unstable in flight ... Eventually, he turned his attention to the ring shape ... After testing several models, the ideal shape was found, and the Aerobie was produced ...
... The shape of water retention curves can be characterized by several models, one of them known as the van Genuchten model where is the water retention ... Based on this parametrization a prediction model for the shape of the unsaturated hydraulic conductivity - saturation - pressure relationship was developed ...
... All similar triangles have the same shape ... These shapes can be classified using complex numbers in a method advanced by J.A ... and Artzy call the ratio S(u,v,w) = (u −w)/(u − v) the shape of triangle (u, v, w) ...
Famous quotes containing the word shape:
“There are moments when very little truth would be enough to shape opinion. One might be hated at extremely low cost.”
—Jean Rostand (18941977)
“Thir dread commander: he above the rest
In shape and gesture proudly eminent
Stood like a Towr; his form had yet not lost
All her Original brightness, nor appeard
Less than Arch Angel ruind, and th excess
Of Glory obscurd: As when the Sun new risn
Looks through the Horizontal misty Air
Shorn of his Beams, or from behind the Moon
In dim Eclips disastrous twilight sheds
On half the Nations, and with fear of change
—John Milton (16081674)
“Thus when I come to shape here at this table between my hands the story of my life and set it before you as a complete thing, I have to recall things gone far, gone deep, sunk into this life or that and become part of it; dreams, too, things surrounding me, and the inmates, those old half-articulate ghosts who keep up their hauntings by day and night ... shadows of people one might have been; unborn selves.”
—Virginia Woolf (18821941)