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 ...
... All similar triangles have the same shape ... These shapes can be classified using complex numbers in a method advanced by J.A ... call the ratio S(u,v,w) = (u −w)/(u − v) the shape of triangle (u, v, w) ...
... 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 ...
... 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 ...
... by their natural markings and facial features, such as fur color and patterning, ear shape, and face shape and pigmentation ... can usually be determined within a week or so of birth, based on the shape and positioning of their genitalia ...
Famous quotes containing the word shape:
“Political image is like mixing cement. When its wet, you can move it around and shape it, but at some point it hardens and theres almost nothing you can do to reshape it.”
—Walter F. Mondale (b. 1928)
“Different persons growing up in the same language are like different bushes trimmed and trained to take the shape of identical elephants. The anatomical details of twigs and branches will fulfill the elephantine form differently from bush to bush, but the overall outward results are alike.”
—Willard Van Orman Quine (b. 1908)
“But her shape is the least of my madness; she has things by which it is more pleasing to die.”
—Propertius Sextus (c. 5016 B.C.)