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Four-sided polygon
In geometry, a quadrilateral is a four-sided polygon, having four edges (sides) and four corners (vertices). The word is derived from the Latin words
Quadrilateral
Topics referred to by the same term
Look up quadrilateral or quadrilatéral in Wiktionary, the free dictionary. A quadrilateral, in geometry, is a polygon with 4 sides. Quadrilateral may also
Quadrilateral (disambiguation)
Quadrilateral_(disambiguation)
National highway network in India connecting four megacities
The Golden Quadrilateral (Hindi: Svarnim Chaturbhuj; abbreviated GQ) is a network of national highways connecting major cities of India. It roughly forms
Golden_Quadrilateral
Quadrilateral with sides of equal length
geometry, a rhombus (pl.: rhombi or rhombuses) is an equilateral quadrilateral, a quadrilateral whose four sides all have the same length. Other names for rhombus
Rhombus
Quadrilateral whose vertices lie on a circle
In geometry, a cyclic quadrilateral or inscribed quadrilateral is a quadrilateral (four-sided polygon) whose vertices all lie on a single circle, making
Cyclic_quadrilateral
Polygon whose four sides all touch a circle
geometry, a tangential quadrilateral (sometimes just tangent quadrilateral) or circumscribed quadrilateral is a convex quadrilateral whose sides all can
Tangential_quadrilateral
Quadrilateral with four right angles
rectilinear convex polygon or a quadrilateral with four right angles. It can also be defined as: an equiangular quadrilateral, since equiangular means that
Rectangle
Methodology for theological reflection that is credited to John Wesley
The Wesleyan Quadrilateral, or Methodist Quadrilateral, is a methodology for theological reflection that is credited to John Wesley, leader of the Methodist
Wesleyan_Quadrilateral
Shape with four equal sides and angles
In geometry, a square is a regular quadrilateral. It has four straight sides of equal length and four equal angles. Squares are special cases of rectangles
Square
Special quadrilateral whose diagonals intersect at right angles
In Euclidean geometry, an orthodiagonal quadrilateral is a quadrilateral in which the diagonals cross at right angles. In other words, it is a four-sided
Orthodiagonal_quadrilateral
Convex, 4-sided shape with an incircle and a circumcircle
In Euclidean geometry, a bicentric quadrilateral is a convex quadrilateral that has both an incircle and a circumcircle. The radii and centers of these
Bicentric_quadrilateral
geometry, an equidiagonal quadrilateral is a convex quadrilateral whose two diagonals have equal length. Equidiagonal quadrilaterals were important in ancient
Equidiagonal_quadrilateral
Indian railway project
The Diamond Quadrilateral is a project of the Indian Railways to establish a high-speed rail network in India. The Diamond Quadrilateral will connect the
Diamond_Quadrilateral
Convex quadrilateral with at least one pair of parallel sides
American English, or trapezium (/trəˈpiːziəm/) in British English, is a quadrilateral that has at least one pair of parallel sides. The parallel sides are
Trapezoid
2016 puzzle video game
Quadrilateral Cowboy is a first-person puzzle-adventure video game by independent developer Blendo Games. The game was released on July 25, 2016, for
Quadrilateral_Cowboy
Four-point articulation of Anglican identity
The Chicago–Lambeth Quadrilateral, frequently referred to as the Lambeth Quadrilateral or the Lambeth–Chicago Quadrilateral, is a four-point articulation
Chicago–Lambeth_Quadrilateral
Quadrilateral with only 3 right angles
In geometry, a Lambert quadrilateral (also known as Ibn al-Haytham–Lambert quadrilateral), is a quadrilateral in which three of its angles are right angles
Lambert_quadrilateral
Quadrilateral symmetric across a diagonal
In Euclidean geometry, a kite is a quadrilateral with reflection symmetry across a diagonal. Because of this symmetry, a kite has two equal angles and
Kite_(geometry)
Quadrilateral with two pairs of parallel sides
geometry, a parallelogram is a chiral simple (non-self-intersecting) quadrilateral with two pairs of parallel sides. The opposite or facing sides of a
Parallelogram
prefix with the suffix -gon, e.g. pentagon, dodecagon. The triangle, quadrilateral and nonagon are exceptions, although the regular forms trigon, tetragon
List_of_polygons
Type of quadrilateral
In geometry, an Apollonius quadrilateral is a quadrilateral A B C D {\displaystyle ABCD} such that the two products of opposite side lengths are equal
Apollonius_quadrilateral
Medical condition
Quadrilateral space syndrome is a rotator cuff denervation syndrome in which the axillary nerve is compressed at the quadrilateral space of the rotator
Quadrilateral_space_syndrome
Cyclic quadrilateral in which the products of opposite side lengths are equal
In Euclidean geometry, a harmonic quadrilateral is a quadrilateral whose four vertices lie on a circle, and whose pairs of opposite edges have equal products
Harmonic_quadrilateral
Relation between the sides of a convex quadrilateral and its diagonals
Euler's quadrilateral theorem or Euler's law on quadrilaterals, named after Leonhard Euler (1707–1783), describes a relation between the sides of a convex
Euler's_quadrilateral_theorem
quadrilateral are conjugate with respect to some conic, then so is the third pair. A quadrilateral with this property is called a Hesse quadrilateral
Hesse's_theorem
2024 Peruvian film
Quadrilateral (Spanish: Cuadrilátero, stylized as Cu4dril4tero) is a 2024 Peruvian black comedy-drama thriller film co-written, co-produced and directed
Quadrilateral_(film)
Line joining midpoints of a complete quadrilateral's 3 diagonals
of the three diagonals of a complete quadrilateral. The midpoints of the two diagonals of a convex quadrilateral with at most two parallel sides are distinct
Newton–Gauss_line
accounts of its creator. Nepal has historically used both quadrilateral flags as well as non-quadrilateral flags throughout its history. The flags of almost all
Flag_of_Nepal
Strategic dialogue between Australia, India, Japan, and the United States
The Quadrilateral Security Dialogue, sometimes referred to as the Quad is a grouping of Australia, India, Japan, and the United States that is maintained
Quadrilateral Security Dialogue
Quadrilateral_Security_Dialogue
Relates the 4 sides and 2 diagonals of a quadrilateral with vertices on a common circle
relation between the four sides and two diagonals of a cyclic quadrilateral (a quadrilateral whose vertices lie on a common circle). The theorem is named
Ptolemy's_theorem
Convex polyhedron with six faces with four edges each
In geometry, a cuboid is a hexahedron with quadrilateral faces, meaning it is a polyhedron with six faces; it has eight vertices and twelve edges. A rectangular
Cuboid
Centers of the incircles of triangles inside a cyclic quadrilateral form a rectangle
that the centers of the incircles of certain triangles inside a cyclic quadrilateral are vertices of a rectangle. It was originally stated on a sangaku tablet
Japanese theorem for cyclic quadrilaterals
Japanese_theorem_for_cyclic_quadrilaterals
Theorem in geometry
Varignon's theorem holds that the midpoints of the sides of an arbitrary quadrilateral form a parallelogram, called the Varignon parallelogram. It is named
Varignon's_theorem
Quadrilateral with two equal sides perpendicular to the base
A Saccheri quadrilateral is a quadrilateral with two equal sides perpendicular to the base. It is named after Giovanni Gerolamo Saccheri, who used it extensively
Saccheri_quadrilateral
Mathematical invariance under transformations
Altitude Hypotenuse Pythagorean theorem Circular Hyperbolic Spherical Quadrilateral Parallelogram Square Rectangle Rhombus Rhomboid Trapezoid Kite Circle
Symmetry
The quadratic quadrilateral element, also known as the Q8 element is a type of element used in finite element analysis which is used to approximate in
Quadratic quadrilateral element
Quadratic_quadrilateral_element
Geometrical theorem
tangential quadrilateral other than a rhombus, the center of the incircle lies on the Newton line. Let ABCD be a tangential quadrilateral with at most
Newton's theorem (quadrilateral)
Newton's_theorem_(quadrilateral)
Convex 4-sided polygon whose sidelines are all tangent to an outside circle
ex-tangential quadrilateral is a convex quadrilateral where the extensions of all four sides are tangent to a circle outside the quadrilateral. It has also
Ex-tangential_quadrilateral
Formula relating the area of a cyclic quadrilateral to its side lengths
Indian mathematician, is used to find the area of any convex cyclic quadrilateral (one that can be inscribed in a circle) given the lengths of the sides
Brahmagupta's_formula
Optical illusion
Matsuyama's paradox uses four congruent quadrilaterals and a small square, which form a larger square. When the quadrilaterals are rotated about their centers
Missing_square_puzzle
Schematic arrangement of vowels
a vowel system with four extremes. Such a diagram is called a vowel quadrilateral or a vowel trapezium. Alternatively, these shape-based terms are used
Vowel_diagram
Theorem in plane geometry
constructed on the sides of a quadrilateral. Starting with a given convex quadrilateral, construct a square, external to the quadrilateral, on each side. Van Aubel's
Van_Aubel's_theorem
Division of something into two equal or congruent parts
the quadrilateral is a tangential quadrilateral. Each diagonal of a rhombus bisects opposite angles. The excenter of an ex-tangential quadrilateral lies
Bisection
Anatomical region of the shoulder joint
The quadrangular space, also known as the quadrilateral of Velpeau and the foramen humerotricipitale, is one of the three spaces in the axillary space
Quadrangular_space
Type of intensional definition
definitions: a triangle: A plane figure that has 3 straight bounding sides. a quadrilateral: A plane figure that has 4 straight bounding sides. Those definitions
Genus–differentia_definition
Point on a line segment which is equidistant from both endpoints
convex quadrilateral are the perpendiculars to a side through the midpoint of the opposite side, hence bisecting the latter side. If the quadrilateral is
Midpoint
Topics referred to by the same term
trapezoid, a quadrilateral that has exactly one pair of parallel sides Trapezium, in North American English, an irregular quadrilateral with no sides
Trapezium
Two geometries based on axioms closely related to those specifying Euclidean geometry
al-Haytham, Khayyam and al-Tusi on quadrilaterals, including the Lambert quadrilateral and Saccheri quadrilateral, were "the first few theorems of the
Non-Euclidean_geometry
bisector construction of a quadrilateral is a construction which produces a new quadrilateral from a given quadrilateral using the perpendicular bisectors
Perpendicular bisector construction of a quadrilateral
Perpendicular_bisector_construction_of_a_quadrilateral
Theorem in Euclidean geometry
how one triangulates a cyclic quadrilateral, the sum of inradii of triangles is constant. After proving the quadrilateral case, the general case of the
Japanese theorem for cyclic polygons
Japanese_theorem_for_cyclic_polygons
cell shapes that are commonly used. These are the triangle and the quadrilateral. Computationally poor elements will have sharp internal angles or short
Types_of_mesh
Trapezoid symmetrical about an axis
geometry, an isosceles trapezoid or isosceles trapezium is a convex quadrilateral with a line of symmetry bisecting one pair of opposite sides. It is
Isosceles_trapezoid
Quadrilateral with equal perpendicular diagonals
elementary geometry, a quadrilateral whose diagonals are perpendicular and of equal length has been called a midsquare quadrilateral (referring to the square
Midsquare_quadrilateral
Relationship between two lines that meet at a right angle
maltitudes of a quadrilateral is a perpendicular to a side through the midpoint of the opposite side. An orthodiagonal quadrilateral is a quadrilateral whose diagonals
Perpendicular
British Thoroughbred racehorse
Quadrilateral (foaled 11 April 2017) is a British Thoroughbred racehorse. She was one of the best two-year-old fillies in Europe in 2019 when she was
Quadrilateral_(horse)
Limiting case which is different from the rest of the class
In mathematics, a degenerate case is a limiting case of a class of objects which appears to be qualitatively different from (and usually simpler than)
Degeneracy_(mathematics)
Points on a common circle
necessarily concyclic. After triangles, the special case of cyclic quadrilaterals has been most extensively studied. In general the centre O of a circle
Concyclic_points
Problem in geometric probability
that four randomly chosen points in the Euclidean plane form a convex quadrilateral. Together with Buffon's needle problem, it has been called "one of the
Sylvester's four point problem
Sylvester's_four_point_problem
The Quadrilateral group or the Quad is an informal group which includes the trade spokespersons of Canada, the European Union, Japan, and the United States
Quadrilateral_group
Form of an object
polygons are classified according to their number of edges as triangles, quadrilaterals, pentagons, etc. Each of these is divided into smaller categories; triangles
Shape
Polyhedron with five faces
Square pyramid with four triangles and one square. Pyramids with any quadrilateral base have the same number of faces. Triangular prism with three rectangles
Pentahedron
British historian
for his definition of evangelicalism, referred to as the Bebbington quadrilateral, which was first provided in his 1989 classic study Evangelicalism in
David_W._Bebbington
Agency for construction & management of Highways in India
Golden Quadrilateral is a highway network connecting many of the major industrial, agricultural and cultural centres of India. A quadrilateral of sorts
National Highways Authority of India
National_Highways_Authority_of_India
Defensive system of the Austrian Empire in Italy
The Quadrilatero (English: Quadrilateral, for greater specificity often called the "Quadrilateral fortresses") is the traditional name of a defensive system
Quadrilatero
King of England from 1509 to 1547
Son Holy Spirit Thirty-nine Articles The Books of Homilies Lambeth Quadrilateral Sacraments Eucharist Mary Saints Liturgy and worship Book of Common
Henry_VIII
Circle constructed from a triangle
the diagonal triangle of a cyclic quadrilateral. The point of intersection of the bimedians of the cyclic quadrilateral belongs to the nine-point circle
Nine-point_circle
Formula for the area of a quadrilateral
mathematical expression for the area of a general quadrilateral. It works on both convex and concave quadrilaterals, whether it is cyclic or not. The German mathematician
Bretschneider's_formula
American independent video game development company
and the design of Quadrilateral Cowboy was a joint effort between Chung and Tynan Wales. The Mac and Linux ports of Quadrilateral Cowboy were done by
Blendo_Games
Country in West Asia
during a visit to Baghdad by Turkish President Recep Tayyip Erdogan, a quadrilateral memorandum of understanding regarding cooperation in the Iraq–Europe
Iraq
King of Scotland from 1567 to 1625, King of England and Ireland from 1603
Son Holy Spirit Thirty-nine Articles The Books of Homilies Lambeth Quadrilateral Sacraments Eucharist Mary Saints Liturgy and worship Book of Common
James_VI_and_I
Geometric figure made of 4 points connected by 6 lines
(1893), and the complete quadrilateral was called a tetragram; those terms are occasionally still used. The complete quadrilateral has also been called a
Complete_quadrangle
King of England, Scotland and Ireland from 1625 to 1649
Son Holy Spirit Thirty-nine Articles The Books of Homilies Lambeth Quadrilateral Sacraments Eucharist Mary Saints Liturgy and worship Book of Common
Charles_I_of_England
Indian mathematician and astronomer (598–668)
in geometry is his formula for cyclic quadrilaterals. Given the lengths of the sides of any cyclic quadrilateral, Brahmagupta gave an approximate and an
Brahmagupta
triangle Quadrilateral – 4 sides Cyclic quadrilateral Kite Rectangle Rhomboid Rhombus Square (regular quadrilateral) Tangential quadrilateral Trapezoid
List of two-dimensional geometric shapes
List_of_two-dimensional_geometric_shapes
Country in East Asia
Retrieved 15 January 2021. Mehra, Jyotsna. "The Australia-India-Japan-US Quadrilateral: Dissecting the China Factor". Observer Research Foundation. Retrieved
Taiwan
The bilinear quadrilateral element, also known as the Q4 element, is a type of element used in finite element analysis which is used to approximate in
Bilinear quadrilateral element
Bilinear_quadrilateral_element
This is a list of non-rectangular flags, including the official flags of states or territories, groups or movements, and individual people. This excludes
List_of_non-rectangular_flags
Construction on any polygon that yields a regular polygon with the same number of sides
triangles, and van Aubel's theorem which corresponds to the case of quadrilaterals. The Petr–Douglas–Neumann theorem asserts the following. If isosceles
Petr–Douglas–Neumann_theorem
In a quadrilateral with all sides tangent to a circle, sums of opposite sides are equal
quadrilateral the two pairs of opposite sides have the same total length. It is named after French engineer Henri Pitot. A tangential quadrilateral is
Pitot_theorem
City in the Southern Levant
Symonds's] map's labelling. Because here, newly arcing across the familiar quadrilateral of Jerusalem, are four double labels in bold capitals. At top left Haret
Jerusalem
Conic solid with a polygonal base
A pyramid is a polyhedron formed by connecting a polygonal base and a point, called the apex. Each base edge and apex form a triangle, called a lateral
Pyramid_(geometry)
Cuboid with all right angles and equal opposite faces
others use cuboid to refer to a more general class of polyhedra with six quadrilateral faces. A rectangular cuboid is a convex polyhedron with six rectangle
Rectangular_cuboid
Country primarily in North America
increasingly turned to the Indo-Pacific, where the U.S. joined the Quadrilateral Security Dialogue and AUKUS. The United States has a "Special Relationship"
United_States
Features that define a (ship) sail's shape and function
(e.g. fore-and-aft) and its shape, (e.g. (a)symmetrical, triangular, quadrilateral, etc.). Sails are typically constructed out of flexible material that
Sail_components
Mechanical linkage consisting of four links connected by joints in a loop
folding quadrilateral linkage, then there are 27 different cases. The figure shows examples of the various cases for a planar quadrilateral linkage.
Four-bar_linkage
Country in Oceania
AUKUS security treaty with the United States and United Kingdom; the Quadrilateral Security Dialogue with the United States, India and Japan; the Five
Australia
American multinational technology company
Nvidia's first graphics accelerator, the NV1, was designed to process quadrilateral primitives (forward texture mapping), a feature that set it apart from
Nvidia
Political party in Romania
The Red Quadrilateral (Romanian: Patrulaterul roșu) was a term used by the Romanian 1990s media to describe the political alliance that supported the
Red_Quadrilateral
Property of points all lying on a single line
Newton line. If the quadrilateral is a tangential quadrilateral, then its incenter also lies on this line. In a convex quadrilateral, the quasiorthocenter
Collinearity
2014 film by Christopher Nolan
avoid making the robots anthropomorphic and chose a 1.5 m (4.9 ft) quadrilateral design. He said: "It has a very complicated design philosophy. It's
Interstellar_(film)
American politician and diplomat (born 1971)
his first day as secretary, Rubio met with foreign ministers of the Quadrilateral Security Dialogue member countries to "strengthen economic opportunity
Marco_Rubio
Cooperation project between Romania, Bulgaria, Greece and Serbia
The Craiova Group (Quadrilateral), Craiova Four, or C4 is a cooperation project of four European states – Romania, Bulgaria, Greece and Serbia – for the
Craiova_Group
Flexible polyhedron
in three-dimensional space consisting of any polygon as its base and quadrilaterals alternating with triangles as its lateral faces; for an n {\displaystyle
Kokotsakis_polyhedron
Triangle area in terms of side lengths
case of Brahmagupta's formula (for the case of a degenerate cyclic quadrilateral). A modern proof, which uses algebra and is quite different from the
Heron's_formula
160 km/h on the existing 55 km (34 mi) section of the line. Diamond quadrilateral is an ambitious plan from India to connect its major cities of Delhi
List of high-speed railway lines in India
List_of_high-speed_railway_lines_in_India
Geometric axiom
If three angles of a quadrilateral are right angles, then the fourth angle is also a right angle. There exists a quadrilateral in which all angles are
Parallel_postulate
Method of interpolating functions on a 2D grid
to functions defined on the vertices of (a mesh of) arbitrary convex quadrilaterals. Bilinear interpolation is performed using linear interpolation first
Bilinear_interpolation
Indian sprint athlete
record for setting the fastest time by a female to complete the Golden Quadrilateral, a network of highways connecting Delhi, Kolkata, Mumbai, and Chennai
Sufiya_Sufi
Part of the brain
substance is a part of the brain. It is bilateral. It is irregular and quadrilateral. It lies in front of the optic tract and behind the olfactory trigone
Anterior_perforated_substance
Part of the Delhi-Kolkata high-speed rail network
corridor Chennai-Bengaluru-Mysuru high-speed rail corridor Diamond Quadrilateral National High Speed Rail Corporation Limited Vande Bharat Express "new
Delhi–Varanasi high-speed rail corridor
Delhi–Varanasi_high-speed_rail_corridor
QUADRILATERAL
QUADRILATERAL
QUADRILATERAL
QUADRILATERAL
Boy/Male
American, Anglo, British, English
Brave Friend
Female
Welsh
Cornish and Welsh name, derived from the Welsh word morwyn, MORWENNA means "maiden."
Biblical
the Lord is raised
Girl/Female
Muslim
Night
Girl/Female
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Tamil, Telugu
Moon; Sun
Girl/Female
Tamil
Tune
Boy/Male
Hindu, Indian, Sanskrit
Famous; Celebrated
Girl/Female
Tamil
Deepthika | திபà¯à®¤à¯€à®•ா
A beam of light
Surname or Lastname
English
English : variant of Bolt.
Girl/Female
Tamil
Winter
QUADRILATERAL
QUADRILATERAL
QUADRILATERAL
QUADRILATERAL
QUADRILATERAL
n.
A right-lined quadrilateral figure, whose opposite sides are parallel, and consequently equal; -- sometimes restricted in popular usage to a rectangle, or quadrilateral figure which is longer than it is broad, and with right angles.
a.
Joining two not adjacent angles of a quadrilateral or multilateral figure; running across from corner to corner; crossing at an angle with one of the sides.
n.
A plane figure having four sides, and consequently four angles; a quadrangular figure; any figure formed by four lines.
n.
An equilateral parallelogram, or quadrilateral figure whose sides are equal and the opposite sides parallel. The angles may be unequal, two being obtuse and two acute, as in the cut, or the angles may be equal, in which case it is usually called a square.
n.
A lake whitefish (Coregonus quadrilateralis), less compressed than the common species. It is very abundant in British America and Alaska.
n.
The property of being quadrilateral.
n.
A quadrilateral, one of whose diagonals is an axis of symmetry.
n.
An area defended by four fortresses supporting each other; as, the Venetian quadrilateral, comprising Mantua, Peschiera, Verona, and Legnano.
a.
Having four sides, and consequently four angles; quadrangular.
n.
A solid bounded by twenty-four similar quadrilateral faces. It is a hemihedral form of the hexoctahedron.
n.
A solid bounded by twelve quadrilateral faces. It is a hemihedral form of the isometric system, allied to the tetrahedron.