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Portion of a disk enclosed by two radii and an arc
A circular sector, also known as circle sector or disk sector or simply a sector (symbol: ⌔), is the portion of a disk (a closed region bounded by a circle)
Circular_sector
Area bounded by a circular arc and a straight line
s={\theta }R} The area a {\displaystyle a} of the circular segment is equal to the area of the circular sector minus the area of the triangular portion (using
Circular_segment
Part of a circle between two points
A circular arc is the arc of a circle between a pair of distinct points. If the two points are not directly opposite each other, one of these arcs, the
Circular_arc
Model of the real economy
a two-sector economy consisting solely of businesses and individuals, and can be represented by a "circular flow diagram." In this two-sector model,
Circular_flow_of_income
Geometric shape
\theta } is the apex angle and h {\displaystyle h} is the height. The circular sector is obtained by unfolding the surface of one nappe of the cone: radius
Cone
Region of the Cartesian plane bounded by a hyperbola and two radii
hyperbolic angle, which is analogous to how the area of a circular sector defines a circular angle. In other words, the hyperbolic angle is the argument
Hyperbolic_sector
Topics referred to by the same term
Look up sector in Wiktionary, the free dictionary. Sector may refer to: Sector, West Virginia, U.S. Circular sector, the portion of a disc enclosed by
Sector
Argument of the hyperbolic functions
{\displaystyle {\sqrt {2}}} , analogous to the circular angle equaling the area of a circular sector in a circle with radius 2 {\displaystyle {\sqrt
Hyperbolic_angle
Hyperbolic analogues of trigonometric functions
beyond the circular functions. Both types depend on an argument, either circular angle or hyperbolic angle. Since the area of a circular sector with radius
Hyperbolic_functions
Region between two concentric circles
\left(R^{2}-r^{2}\right).} The area of an annulus sector (the region between two circular sectors with overlapping radii) of angle θ, with θ measured
Annulus_(mathematics)
circle Circular triangle Reuleaux triangle Circumcircle Disc Incircle and excircles of a triangle Nine-point circle Circular sector Circular segment
List of two-dimensional geometric shapes
List_of_two-dimensional_geometric_shapes
Production model to minimise wastage and emissions
Circular economy (CE), also referred to as circularity, is a model of resource production and consumption that involves sharing, leasing, reusing, repairing
Circular_economy
Intersection of a sphere and cone emanating from its center
separated. Circular sector — the analogous 2D figure. Spherical cap Spherical segment Spherical wedge Weisstein, Eric W. "Spherical sector". MathWorld
Spherical_sector
Simple curve of Euclidean geometry
, {\displaystyle s=\theta r,} and the formula for the area A of a circular sector of radius r and with central angle of measure 𝜃 is A = 1 2 θ r 2
Circle
Circular sector of fabric set into a garment
(/ɡoʊˈdeɪ/ or /ɡoʊˈdɛt/) is an extra piece of fabric in the shape of a circular sector which is set into a garment, usually a dress or skirt. The addition
Godet_(sewing)
Mathematical functions
and twice the area of the corresponding hyperbolic sector. This is analogous to the way circular angle measure is the arc length of an arc of the unit
Inverse_hyperbolic_functions
Figure formed by two rays meeting at a common point
hyperbolic sector and a circular sector since the areas of these sectors correspond to the angle magnitudes in each case. Unlike the circular angle, the hyperbolic
Angle
Recreational mathematics planar boundary and area problem
grazing a circular area: the interior grazing problem and the exterior grazing problem. The former involves grazing the interior of a circular area, and
Goat_grazing_problem
centroids Second polar moment of area "Circle". eFunda. Retrieved 2006-12-30. "Circular Half". eFunda. Retrieved 2006-12-30. "Quarter Circle". eFunda. Retrieved
List of second moments of area
List_of_second_moments_of_area
One of four circular sectors of the Milky Way galaxy
A galactic quadrant, or quadrant of the Galaxy, is one of four circular sectors in the division of the Milky Way Galaxy. In actual astronomical practice
Galactic_quadrant
Interlinked supertall skyscraper in Kuala Lumpur, Malaysia
based on a Rub el Hizb, albeit with circular sectors added to meet office space requirements. The circular sectors are similar to the bottom part of the
Petronas_Towers
Image scanning device
an object "through" the disk, preferably through a relatively small circular sector of the disk (the viewport), for example, an angular quarter or eighth
Nipkow_disk
Antiderivative of the secant function
of a circular sector to the area of a hyperbolic sector, via a common stereographic projection. If twice the area of the blue hyperbolic sector is ψ,
Integral of the secant function
Integral_of_the_secant_function
Math Open Reference". "Quarter Circle". eFunda. Retrieved 23 April 2016. "Circular Half". eFunda. Retrieved 23 April 2016. http://www.engineering
List_of_centroids
Locality in New South Wales, Australia
Circular Quay is a harbour, former working port and now international passenger shipping terminal, public piazza and tourism precinct, heritage area, and
Circular_Quay
Mathematical process of finding the derivative of a trigonometric function
first quadrant. In the diagram, let R1 be the triangle OAB, R2 the circular sector OAB, and R3 the triangle OAC. The area of triangle OAB is: A r e a
Differentiation of trigonometric functions
Differentiation_of_trigonometric_functions
Three-dimensional curved geometric object
same shape may be also formed as the convex hull of the two remaining circular arcs each spanning an angle of 4π/3. The surface area of an oloid is given
Oloid
Unsolved geometry problem about planar regions
for a convex cover. In the 1970s, John Wetzel conjectured that a 30° circular sector of unit radius is a cover with area π / 12 ≈ 0.2618 {\displaystyle
Moser's_worm_problem
SI derived unit of angle
ratios of lengths in general. A similar calculation using the area of a circular sector θ = 2A/r2 gives 1 radian as 1 m2/m2 = 1. The key fact is that the radian
Radian
Topics referred to by the same term
Washington, D.C. Quadrant (circle), a circular sector equal to one-quarter of a circle Quadrant (plane geometry), a sector of a two-dimensional Cartesian coordinate
Quadrant
Mathematical function relating circular and hyperbolic functions
function relates a hyperbolic angle measure ψ {\textstyle \psi } to a circular angle measure ϕ {\textstyle \phi } called the gudermannian of ψ {\textstyle
Gudermannian_function
Laws describing planetary orbits
⋅ | z s x | . {\displaystyle |zsp|={\frac {b}{a}}\cdot |zsx|.} The circular sector area | z c y | = a 2 M 2 . {\displaystyle |zcy|={\frac {a^{2}M}{2}}
Kepler's laws of planetary motion
Kepler's_laws_of_planetary_motion
Italian physicist and astronomer (1564–1642)
of any regular polygon, computation of the area of any polygon or circular sector, and a variety of other calculations. Under Galileo's direction, instrument
Galileo_Galilei
Overview of and topical guide to geometry
Orthogonal Polar coordinate system Pole Real axis Secant line Circular sector or "sector" Semiperimeter Symmetry Shape Pattern Crystal system Frieze group
Outline_of_geometry
Size of a two-dimensional surface
partition the circle into sectors, as shown in the figure to the right. Each sector is approximately triangular in shape, and the sectors can be rearranged to
Area
Probabilistic problem-solving algorithm
outputs. Aggregate the results. For example, consider a quadrant (circular sector) inscribed in a unit square. Given that the ratio of their areas is
Monte_Carlo_method
Measure in 3-dimensional geometry
Just as the magnitude of a plane angle in radians at the vertex of a circular sector is the ratio of the length of its arc to its radius, the magnitude
Solid_angle
Ongoing theorised stock market bubble
originates from concerns that leading AI tech firms are involved in a circular flow of investments that are artificially inflating the value of their
AI_bubble
Track and field event
must land in the throwing sector, which is a circular sector of 34.92° centered on the throwing circle. The throwing sector has been narrowed multiple
Shot_put
Class of Russian nuclear powered ballistic submarines
able to fire missiles in any direction from a constant course in a circular sector. The underwater firing of the ballistic missiles can be conducted at
Delta-class_submarine
Galaxy containing the Solar System
galactic quadrant, or quadrant of the Milky Way, refers to one of four circular sectors in the division of the Milky Way. In astronomical practice, the delineation
Milky_Way
Hat associated with Israel
in the shape of a circular sector and are sewn so that the tops of the four pieces touch each other and each shank of each sector is sewn to the shank
Tembel_hat
Unsolved geometric problem
instance, a circular forest. The optimal escape path for a semicircular forest, or more generally a forest in the shape of a circular sector with angle
Bellman's lost-in-a-forest problem
Bellman's_lost-in-a-forest_problem
Class of problems in classical mechanics
vector L = r × m v is not zero. Every central force can produce uniform circular motion, provided that the initial radius r and speed v satisfy the equation
Classical central-force problem
Classical_central-force_problem
Metro stations in Bidhannagar, WB, India
Salt Lake Sector V (also known as Bandhan Bank, Salt Lake Sector V for sponsorship reasons) and IT Centre are the Kolkata Metro stations serving Salt Lake
Salt Lake Sector-V and IT Centre metro stations
Salt_Lake_Sector-V_and_IT_Centre_metro_stations
Division problem
constraint that the cuts must be radial, so that each child receives a circular sector. A possible application of the pie model might be for dividing an island’s
Fair_pie-cutting
Plane curve: conic section
of the circular sector which that angle subtends. The analogous hyperbolic angle is likewise defined as twice the area of a hyperbolic sector. Let a {\displaystyle
Hyperbola
Application of circular economy to the fashion industry
Circular fashion is an application of circular economy to the fashion industry, where the life cycles of fashion products are extended. The aim is to create
Circular_fashion
Apollonian circles Apollonian gasket Arbelos Borromean rings Circle Circular sector Circular segment Cyclic quadrilateral Cycloid Epitrochoid Epicycloid Cardioid
List_of_mathematical_shapes
Weisstein, Eric W. "Disk Line Picking". MathWorld. Weisstein, Eric W. "Circular Sector Line Picking". MathWorld. Beck, Dominik (2023-09-22), Mean distance
Mean_line_segment_length
Artificial Christmas tree filled with singers
nativity plays. Constructed of steel, the "tree" is actually a conical circular sector where between one-third and one-half of an actual Christmas tree is
Singing_Christmas_tree
Proposed particle accelerator
The Future Circular Collider (FCC) is a proposed particle accelerator with an energy significantly above that of previous circular colliders, such as
Future_Circular_Collider
Colour located between red and yellow
have a roundel with an orange dot in the middle, surrounded by three circular sectors in red, white, and blue. In the Indonesian Air Force, the Air force
Orange_(colour)
Track and field athletics event
a 28.96º circular sector that is centered on the center point of the throwing arc. The angle of the throwing sector (28.96º) provides sector boundaries
Javelin_throw
Power Companies Public Debt in Pakistan
(2024-01-16). "Circular debt reaches Rs5.73tr". The Express Tribune. Retrieved 2025-09-24. Ghumman, Mushtaq (2025-07-31). "Power sector's circular debt hits
Circular_debt
Topics referred to by the same term
Wiktionary, the free dictionary. Sextant may refer to: Sextant (circle), a circular sector equal to one sixth of a circle, or a third of a semicircle Sextant
Sextant_(disambiguation)
Multi-dimensional object whose lengths in each dimension are similar
}{2}}\right)}}\approx {\frac {\theta }{\theta ^{2}/8}}={\frac {8}{\theta }}} For a circular sector with central angle θ (when θ is small), the circumcircle diameter is
Fat_object_(geometry)
Celestial coordinate system in spherical coordinates, with the Sun as its center
related to Galactic coordinate system. Galactic quadrant – One of four circular sectors of the Milky Way galaxy Supergalactic coordinate system – Astronomical
Galactic_coordinate_system
Event in track and field athletics
before releasing the discus. The discus must land within a 34.92º circular sector that is centered on the throwing circle. The rules of competition for
Discus_throw
Island in the Caribbean Sea
The division of this almost round island into parishes was done in a circular sector pattern, so each parish is shaped like a pie slice, reaching from the
Nevis
Historical method for giving addresses to physical data blocks on hard disk drives
(or radial) coordinate cylinder, and an angular coordinate sector. Head selects a circular surface: a platter in the disk (and one of its two sides).
Cylinder-head-sector
Theory of economic and social reform developed by Gunnar Myrdal and Nicholas Kaldor
Circular cumulative causation is a theory developed by Swedish economist Gunnar Myrdal who applied it systematically for the first time in his 1944 study
Circular_cumulative_causation
Primitive way of calculating area
smallest and largest circular sectors enclosing the spiral. See the second image for clarification. Let P {\textstyle P} be the set of sectors on the interior
Method_of_exhaustion
Transit line in Kolkata, India
currently runs from Salt Lake Sector-V to Howrah Maidan by going underneath the Hooghly River. A future eastern extension from Sector-V to Teghoria and western
Green_Line_(Kolkata_Metro)
Train in India
branch line Sealdah Main and North section Calcutta Chord link line Kolkata Circular Railway Sealdah–Bangaon line Sealdah–Ranaghat–Gede line Ranaghat–Krishnanagar
Kanchanjungha_Express
is a piece of fabric wider at the bottom than at the top, often a circular sector, inserted into a garment to add fullness for ease of movement or as
Glossary_of_sewing_terms
Mathematical instrument consisting of two hinged rulers
calculate the area of circular segments. It took him more than a year to solve this problem. The instrument we know today as Galileo's sector is the version
Sector_(instrument)
Type of rollable 3D shape
formed by cutting and gluing a paper template in the form of four circular sectors (with central angles π / 2 {\displaystyle \pi /{\sqrt {2}}} ) joined
Sphericon
Several ancient cities of Mesopotamia and Persia are known to have had a circular plan. Iranian architecture#City design Huff, D. "ARCHITECTURE iii. Sasanian
List_of_circular_cities
A circular economy is an alternative way countries manage their resources, in which usage of products in the traditional linear make, use, and dispose
China's_circular_economy
English educator and mathematician (1829–1903)
functions are described. He was taken by the analogy of circular sectors and hyperbolic sectors. Instead of cos u, sin u, etc. as functions of the angle
Robert_Baldwin_Hayward
Public school examination in Malaysia abolished in 2014
formulae and manipulation Plane and solid geometry Circles Arc length and circular sector area Transformations Geometrical constructions and loci in two dimensions
Penilaian_Menengah_Rendah
Unicameral legislature of Greece
with inlaid gold ornaments. Seating for the MPs is arranged in five circular sectors. The speaker's chair, the lectern, the ministerial and state functionary
Hellenic_Parliament
Approach towards a circular economy
roughly 100,000 jobs across multiple sectors within five years. A study of 255 Chinese manufacturers found that circular procurement was associated with reduced
Circular_procurement
Circular statistical graph of proportionality
A pie chart (or a circle chart) is a circular statistical graphic which is divided into slices to illustrate numerical proportion. In a pie chart, the
Pie_chart
Express train in India
branch line Sealdah Main and North section Calcutta Chord link line Kolkata Circular Railway Sealdah–Bangaon line Sealdah–Ranaghat–Gede line Ranaghat–Krishnanagar
Sealdah–Sabroom Kanchanjungha Express
Sealdah–Sabroom_Kanchanjungha_Express
Convex plane region bounded by two circular arcs
[This is an application of the Inclusion-exclusion principle: the two circular sectors centered at (0,0) and (d,0) with central angles 2 a r {\displaystyle
Lens_(geometry)
French businessman (born 1963)
the French themselves have changed and are demanding a low-carbon and circular industry. Bpifrance, which I lead, is working hard on this, without nostalgia
Nicolas_Dufourcq
On eigenvalues of random matrices
decomposes into sectors depending on the number of real eigenvalues. However, at the N → ∞ {\displaystyle N\to \infty } limit, the circular law is recovered
Circular_law
Railway station in British Columbia, Canada
spike on the KVR was not driven until July 1916. Within the southern circular sector surrounding the diamond crossing, the KV erected an interlocking tower
Hope station (British Columbia)
Hope_station_(British_Columbia)
Municipality of Amazonas, Brazil
skins. In some areas along the rivers, Victoria amazonica is found, with circular leaves reaching over one meter in diameter. According to the 2022 Brazilian
Manacapuru
two radii meeting Circular sector – Portion of a disk enclosed by two radii and an arc Circular segment – Area bounded by a circular arc and a straight
List_of_circle_topics
The Circular Carbon Economy Initiative is an initiative proposed by the Kingdom of Saudi Arabia during its presidency of the G20 Summit in November 2020
Circular Carbon Economy Initiative
Circular_Carbon_Economy_Initiative
Metro station in Bidhannagar, WB, India
to Dum Dum Circular Canal Sealdah South to Ballygunge Sealdah Blue Line Esplanade Purple Line Purple Line Mahakaran B.B.D. Bag on Circular Line Hooghly
Karunamoyee_metro_station
housing showcase. 11 June: The London Transport Executive introduces a Circular Tour of London using double-decker buses for the Festival. 15 June: The
Timeline of London (20th century)
Timeline_of_London_(20th_century)
Essay containing: 1. The determination of the center of gravity of any circular sector; 2. The geometric resolution of the problem of the definite quadrature
Guillaume le Roberger de Vausenville
Guillaume_le_Roberger_de_Vausenville
mainly in large and dynamic warehouse environments. Robotics supports circular economy workflows such as automated disassembly, material sorting and component
Intelligent manufacturing systems
Intelligent_manufacturing_systems
Geometric line segment whose endpoints lie on a circular arc
2 r {\displaystyle \theta =2\arcsin {\frac {c}{2r}}} Circular segment – the part of the sector that remains after removing the triangle formed by the
Chord_(geometry)
In India, lending to underserved economic sectors
Priority sector lending is lending to those sectors of the economy which may not otherwise receive timely and adequate credit. This role is assigned by
Priority_sector_lending
Historical commune in the western suburbs of Paris
Sellier was inaugurated in the town hall park. The Cité de l'Europe, a vast circular block of flats, is built in the town center, replacing a 17th-century mansion
History_of_Suresnes
Metro station in Kolkata, India
Mahakaran Salt Lake Sector-V bound Platform General information Location Old Court House St, B. B. D. Bagh Kolkata, West Bengal 700001 India Coordinates
Mahakaran_metro_station
Temporary movement of a migrant worker
Circular migration or repeat migration is the temporary and usually repetitive movement of a migrant worker between home and host areas, typically for
Circular_migration
Developable roller constructed from a cone
a TDR convex hull it is the convex hull of two perpendicular 180° circular sectors joined at their centers. As a polycon, the starting point is a cone
Polycon
India has a developing mixed economy with a notable public sector in strategic sectors. It is the world's sixth-largest economy by nominal GDP and the
Economy_of_India
Spanish multinational environmental services company
of Clinical Nutrition in 2022, Tradebe entered the health and wellbeing sector. Clinical Nutrition, based in Argentona (Barcelona), specialises in enteral
Tradebe
Mechanical analog computer
rules exist in a diverse range of styles and generally appear in a linear, circular or cylindrical form. Slide rules manufactured for specialized fields such
Slide_rule
History of the municipality of Pescara, Italy
described as nearly completed. Maps from the period, still showing the circular Santa Gerusalemme building, attest to its survival, with the last historical
History_of_Pescara
Train in India
branch line Sealdah Main and North section Calcutta Chord link line Kolkata Circular Railway Sealdah–Bangaon line Sealdah–Ranaghat–Gede line Ranaghat–Krishnanagar
Sealdah–Silchar Kanchanjungha Express
Sealdah–Silchar_Kanchanjungha_Express
than 58° are covered at least twice daily except for small unmeasured circular sectors of 2.4° about the poles. Extreme polar regions (> 72° N or S) receive
Special sensor microwave/imager
Special_sensor_microwave/imager
Malaysian governmental sustainable development strategy
Transition, aims to decarbonize various sectors, promote renewable energy sources, and establish a circular economy. In 2024, the Malaysian government
Malaysian_Green_Transition
CIRCULAR SECTOR
CIRCULAR SECTOR
Surname or Lastname
English
English : habitational name from Turnham in East Yorkshire or Turnham Green in West London, both of which are so named from an Old English trun ‘circular’, probably denoting a U-shaped bend in a river, + hamm ‘water meadow’ or hÄm ‘homestead’.
Surname or Lastname
English (Essex, Cambridgeshire)
English (Essex, Cambridgeshire) : possibly a variant of Trendall, a topographic name for someone who lived by a well, earhwork, stone circle, or other circular feature, from Middle English trendel, trandle ‘circle’ (Old English trendel).Possibly an altered spelling of South German Tröndle, a variant of Trendle, a nickname for a tearful person, from Träne ‘tear’ + the diminutive suffix -l.
Boy/Male
Hindu
Lord vishnus weapon, Circular
Boy/Male
Indian, Sanskrit
Circular; Resembles a Wheel
Boy/Male
Indian, Sanskrit
Circular; Resembles a Wheel
Boy/Male
Tamil
Lord vishnus weapon, Circular
CIRCULAR SECTOR
CIRCULAR SECTOR
Girl/Female
Tamil
Triguni | தà¯à®°à¯€à®•à¯‚நீ
The three dimensions
Boy/Male
Tamil
Sapthagiri | ஸபà¯à®¤à®¾à®•à¯€à®°à¯€
Other name of Lord Sri venkateswara
Boy/Male
Indian
Clean Guy
Boy/Male
Hindu, Indian, Tamil
Wisdom
Girl/Female
Australian, Greek, Hebrew, Spanish
Beautiful Dawn
Boy/Male
Tamil
The fifth month of the Hindu year, One who offers a sacrifice to God, Rain during monsoon season
Surname or Lastname
English
English : variant of Stokes.
Girl/Female
Greek
Resurrection.
Girl/Female
Australian, Christian, Hebrew
Place Name; A Plain; It Refers to Flat Land at the Foot of Mount Carmel; Plain; Level Ground
Female
English
Anglicized form of Irish Gaelic Eithne, ENA means "kernel."
CIRCULAR SECTOR
CIRCULAR SECTOR
CIRCULAR SECTOR
CIRCULAR SECTOR
CIRCULAR SECTOR
a.
Adhering to a fixed circle of legends; cyclic; hence, mean; inferior. See Cyclic poets, under Cyclic.
n.
A circular dance.
a.
Round; circular; spherical.
n.
A circular projecting portion.
v. i.
To move circularly; to form a circle; to circulate.
a.
Spherical; orbicular; orblike; circular.
a.
Circular; suitable to rotation.
a.
Perfect; complete.
v. t.
To cause to pass from place to place, or from person to person; to spread; as, to circulate a report; to circulate bills of credit.
a.
Addressed to a circle, or to a number of persons having a common interest; circulated, or intended for circulation; as, a circular letter.
n.
A small circular saw.
a.
Nearly circular.
a.
A sleeveless cloak, cut in circular form.
adv.
In a circular manner.
a.
repeating itself; ending in itself; reverting to the point of beginning; hence, illogical; inconclusive; as, circular reasoning.
a.
In the form of, or bounded by, a circle; round.
n.
The quality or state of being circular; a circular form.
a.
A circular letter, or paper, usually printed, copies of which are addressed or given to various persons; as, a business circular.
a.
Circular; illogical.
n.
Circular motion in a direction contrary to some other circular motion.