v
(transitive, geometry) To perform an alternation (removal of alternate vertices) on (a polytope or tessellation); to remove vertices (from a face or edge) as part of an alternation.
n
(countable) A sharp point or angle.
n
The formation of angles.
v
To establish the two-dimensional position of a point by measuring the position of an intermediate point relative to a fixed point
adj
Having two coordinates, typically latitude and longitude
n
A matrix with two elements per cell.
adj
(mathematics) Having three variables and their duals
adj
(mathematics) Relating to the centre of an affine space
n
(geometry, specifically, of a triangle) The point of intersection of the three medians of a given triangle; the point whose (Cartesian) coordinates are the arithmetic mean of the coordinates of the three vertices.
n
(American spelling) Alternative form of colour triangle [(British spelling) A plane triangular graph on which are drawn all the colours that can be made by the additive mixing of red blue and green; these three primary colours are at the apices, while white is in the middle.]
n
Abbreviation of coordinate. [(mathematics, cartography, astronomy) A number representing the position of a point along a line, arc, or similar one-dimensional figure.]
adj
(geometry, of at least two things, usually lines or plane figures) Within the same plane.
adv
At equal angles (apart)
n
(geometry) A set of four points whose cross ratio (or anharmonic ratio) is a cube root of 1.
adj
(geometry) Relating to the excentre.
n
One of a series of things, such as steps in a project.
n
Alternative form of faceting [An arrangement into facets.]
n
(algebraic geometry) The fourth coordinate indicating a position along the fourth axis.
n
Alternative form of Harberger triangle. [(economics) A graphical representation of the deadweight loss (as measured on a supply and demand graph) in the trade of a given product or service caused by market failure or government failure.]
n
Synonym of interior angle
n
(art) A form of geometric perspective in which parallel lines are represented as converging in order to give the illusion of depth and distance.
adj
Having long sides, or, especially, the form of a long parallelogram.
adj
(geometry) Containing, or consisting of, lines of different kinds (straight, curved, etc.).
n
(programming) A data structure consisting of a vector of vectors, in the case of a 2-dimensional array, or, in the case of an N-dimensional array, a vector of multidimensional arrays of degree N minus 1, thereby allowing the simulation of a N-dimensional grid of storage locations using an underlying memory architecture in which storage is addressed in a linear fashion.
n
(mathematics) A multiple (n to n) mapping
n
(physics) A curvilinear grid used to model aspects of general relativity
n
Synonym of oblique foliation
adj
(mathematics, in three dimensions) Describing a section of a simple helix
adj
(geometry) Of or relating to a set of four points in the plane, one of which is the orthocenter of the triangle formed by the other three.
n
(Gaelic games, dated) either of two rectangular areas (respectively the large parallelogram and the small parallelogram) abutting the goal line in front of the goal. (Since 1986 officially named the large rectangle and small rectangle, though the older names are still occasionally used.)
adj
Having the properties of a parallelogram.
adj
(anatomy) Over the quadrate or the quadratojugal
adj
(mathematics) Describing two planes that do not intersect
n
(mathematics) The partitioning of the plane into pseudotriangles
adj
Alternative form of quadrangular [Having the shape of a quadrangle; in the shape of a quadrangle.]
v
(transitive) To divide (a plane or other surface) into quadrangles, often by removing the dividing line between two adjacent triangles (following a previous triangulation)
n
The act or result of quadrangulating a surface.
adj
Of, pertaining to, or affecting a quadrant.
n
(mathematics) a covariant of degree 4
n
Alternative form of quadrangulation [(mathematics) A graph embedded in a surface such that every face is a quadrangle.]
n
The determination of the location of a point based on its distance from four other points.
adj
(mathematics) Having four nodes.
n
(attributive) A phase modulation technique that uses four different phase angles.
adj
Composed of, or relating to, four planes.
v
(transitive) To divide into four parts.
n
The condition of being quadrivalent.
adj
(graph theory) Said of a graph: that all of its vertices have degree four.
n
(physics) Synonym of four-velocity
adj
(rare) In four directions; four ways.
n
(education, historical) The higher division of the seven liberal arts in the Middle Ages, composed of geometry, astronomy, arithmetic, and music.
adj
(physics) Involving four waves or (more often) four wavefronts
adj
(physics) Of or pertaining to four electrons.
adj
(mathematics) Exhibiting quasitriangularity.
n
(science fiction) Normal, three-dimensional space; as opposed to hyperspace
adj
(geometry, art) Formed from straight lines.
n
(UK, historical) The use of triangulation pillars to compute a more modern and accurate triangulation of Great Britain.
n
(mathematics) Half the length of a perimeter.
n
Alternative form of semivariogram [(statistics) A function of the spatial dependence of semivariance; a graph of this function.]
n
A triangle forming part of a larger triangle.
adj
(geometry) Relating to a tesseract; relating to four-dimensional space or to a 4-polytope
adj
(mathematics) Having four terms.
n
(uncountable) A method of technical drawing where the front view of the object is placed in the third quadrant, the side view is to the right, and the top view is above it. (More common in North America.)
n
(computer graphics) triangle
n
(mathematics) A relationship between three vector spaces.
n
The area comprising the cities of Raleigh, Durham and Chapel Hill in North Carolina. Used with "the" except when attributive.
adj
Located inside a triangle.
adj
Capable of being triangulated
v
to locate by means of triangulation
n
(surveying) A combination of triangulation and trilateration.
n
(uncountable, surveying) A technique in which distances and directions are estimated from an accurately measured baseline and the principles of trigonometry; (countable) an instance of the use of this technique.
n
(UK) A triangulation pillar.
n
(UK) A triangulation pillar.
n
(countable, astrology) A division consisting of three signs.
n
Synonym of triangulation pillar
v
To locate by means of trilateration
n
The determination of the location of a point based on its distance from three other points.
n
(mathematics) A triple (x, y, z) of the algebraic distances of a point to each side of a surrounding triangle
v
(transitive, astrology) To put in the aspect of a trine.
n
(geometry) The division of an angle into three equal parts.
n
(geometry) Either of two points which trisect a given line segment.
n
(mathematics) A certain type of statistic used to analyze nonlinear interactions
adj
(mathematics) Having or involving exactly three variables.
v
(geometry) To replace a corner by a plane (or to make a similar change to a crystal).
adj
(mathematics, in three dimensions) Describing a construction of two helices that wrap around the same cylinder; if infinite, would divide the surface of the cylinder into two
n
The common point of the two rays that form an angle.
adj
In a two-dimensional Cartesian co-ordinate system, describing the axis y oriented normal (perpendicular, at right angles) to the horizontal axis x.
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