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72 relations: Albrecht Dürer, Algebraic expression, Andrew M. Gleason, Angle trisection, Apothem, Barbados, Botswana pula, Brazil, Cactus, Casus irreducibilis, Circumscribed circle, Coat of arms of Georgia (country), Coin, Compass-and-straightedge construction, Complete graph, Complex number, Constructible number, Constructible polygon, Cubic function, Curve of constant width, Curvilinear coordinates, Degree (angle), Dihedral group, Directed graph, Divisor, Elision, Fermat number, Fifty pence (British coin), Forum Geometricorum, Geometry, Georgian Soviet Socialist Republic, Germany, Greek language, Heptagonal antiprism, Heptagonal prism, Heptagonal tiling, Heptagonal triangle, Heptagram, Hyperbolic geometry, Internal and external angles, Irreducible polynomial, John Horton Conway, Latin, Mathematics Magazine, Mausoleum of Prince Ernst, Minimal polynomial (field theory), Neusis construction, Numeral prefix, Optic equation, Orthographic projection, ..., Petrie polygon, Pierpont prime, Poincaré disk model, Point group, Polygon, Radian, Radius, Regular polygon, Reuleaux triangle, Ruler, Schläfli symbol, Schoenflies notation, Skew polygon, Stadthagen, Tomahawk (geometry), Twenty pence (British coin), United Kingdom, Vending machine, Vertex (geometry), Zambian kwacha, Zero of a function, 6-simplex. Expand index (22 more) »
Albrecht Dürer
Albrecht Dürer (21 May 1471 – 6 April 1528)Müller, Peter O. (1993) Substantiv-Derivation in Den Schriften Albrecht Dürers, Walter de Gruyter.
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Algebraic expression
In mathematics, an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number).
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Andrew M. Gleason
Andrew Mattei Gleason (19212008) was an American mathematician who as a young World War II naval officer broke German and Japanese military codes, then over the succeeding sixty years made fundamental contributions to widely varied areas of mathematics, including the solution of Hilbert's fifth problem, and was a leader in reform and innovation in teaching at all levels.
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Angle trisection
Angle trisection is a classical problem of compass and straightedge constructions of ancient Greek mathematics.
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Apothem
The apothem (sometimes abbreviated as apo) of a regular polygon is a line segment from the center to the midpoint of one of its sides.
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Barbados
Barbados is an island country in the Lesser Antilles of the West Indies, in the Caribbean region of North America.
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Botswana pula
The pula is the currency of Botswana.
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Brazil
Brazil (Brasil), officially the Federative Republic of Brazil (República Federativa do Brasil), is the largest country in both South America and Latin America.
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Cactus
A cactus (plural: cacti, cactuses, or cactus) is a member of the plant family Cactaceae,Although the spellings of botanical families have been largely standardized, there is little agreement among botanists as to how these names are to be pronounced.
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Casus irreducibilis
In algebra, casus irreducibilis (Latin for "the irreducible case") is one of the cases that may arise in attempting to solve a cubic equation with integer coefficients with roots that are expressed with radicals.
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Circumscribed circle
In geometry, the circumscribed circle or circumcircle of a polygon is a circle which passes through all the vertices of the polygon.
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Coat of arms of Georgia (country)
The coat of arms of Georgia is one of the national symbols of the republic.
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Coin
A coin is a small, flat, (usually) round piece of metal or plastic used primarily as a medium of exchange or legal tender.
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Compass-and-straightedge construction
Compass-and-straightedge construction, also known as ruler-and-compass construction or classical construction, is the construction of lengths, angles, and other geometric figures using only an idealized ruler and compass.
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Complete graph
No description.
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Complex number
A complex number is a number that can be expressed in the form, where and are real numbers, and is a solution of the equation.
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Constructible number
In geometry and algebra, a real number is constructible if and only if, given a line segment of unit length, a line segment of length || can be constructed with compass and straightedge in a finite number of steps.
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Constructible polygon
In mathematics, a constructible polygon is a regular polygon that can be constructed with compass and straightedge.
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Cubic function
In algebra, a cubic function is a function of the form in which is nonzero.
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Curve of constant width
In geometry, a curve of constant width is a convex planar shape whose width (defined as the perpendicular distance between two distinct parallel lines each having at least one point in common with the shape's boundary but none with the shape's interior) is the same regardless of the orientation of the curve.
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Curvilinear coordinates
In geometry, curvilinear coordinates are a coordinate system for Euclidean space in which the coordinate lines may be curved.
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Degree (angle)
A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of a plane angle, defined so that a full rotation is 360 degrees.
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Dihedral group
In mathematics, a dihedral group is the group of symmetries of a regular polygon, which includes rotations and reflections.
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Directed graph
In mathematics, and more specifically in graph theory, a directed graph (or digraph) is a graph that is a set of vertices connected by edges, where the edges have a direction associated with them.
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Divisor
In mathematics, a divisor of an integer n, also called a factor of n, is an integer m that may be multiplied by some integer to produce n. In this case, one also says that n is a multiple of m. An integer n is divisible by another integer m if m is a divisor of n; this implies dividing n by m leaves no remainder.
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Elision
In linguistics, an elision or deletion is the omission of one or more sounds (such as a vowel, a consonant, or a whole syllable) in a word or phrase.
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Fermat number
In mathematics a Fermat number, named after Pierre de Fermat who first studied them, is a positive integer of the form where n is a nonnegative integer.
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Fifty pence (British coin)
The British decimal fifty pence (50p) coin – often pronounced fifty pee – is a unit of currency equaling one half of a pound sterling.
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Forum Geometricorum
Forum Geometricorum: A Journal on Classical Euclidean Geometry (often abbreviated Forum Geom.) is a peer-reviewed open-access academic journal that specializes in mathematical research papers on Euclidean geometry.
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Geometry
Geometry (from the γεωμετρία; geo- "earth", -metron "measurement") is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space.
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Georgian Soviet Socialist Republic
Georgia, formally the Georgian Soviet Socialist Republic (Georgian SSR; tr; Gruzinskaya Sovetskaya Sotsialisticheskaya Respublika), was one of the republics of the Soviet Union from its inception in 1922 to its breakup in 1991.
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Germany
Germany (Deutschland), officially the Federal Republic of Germany (Bundesrepublik Deutschland), is a sovereign state in central-western Europe.
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Greek language
Greek (Modern Greek: ελληνικά, elliniká, "Greek", ελληνική γλώσσα, ellinikí glóssa, "Greek language") is an independent branch of the Indo-European family of languages, native to Greece and other parts of the Eastern Mediterranean and the Black Sea.
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Heptagonal antiprism
In geometry, the heptagonal antiprism is the fifth in an infinite set of antiprisms formed by an even-numbered sequence of triangle sides closed by two polygon caps.
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Heptagonal prism
In geometry, the heptagonal prism is the fifth of the infinite set of convex prisms formed by square sides and two regular polygon caps, in this case two heptagons.
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Heptagonal tiling
In geometry, the heptagonal tiling is a regular tiling of the hyperbolic plane.
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Heptagonal triangle
A heptagonal triangle is an obtuse scalene triangle whose vertices coincide with the first, second, and fourth vertices of a regular heptagon (from an arbitrary starting vertex).
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Heptagram
A heptagram, septagram, septegram or septogram is a seven-point star drawn with seven straight strokes.
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Hyperbolic geometry
In mathematics, hyperbolic geometry (also called Bolyai–Lobachevskian geometry or Lobachevskian geometry) is a non-Euclidean geometry.
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Internal and external angles
In geometry, an angle of a polygon is formed by two sides of the polygon that share an endpoint.
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Irreducible polynomial
In mathematics, an irreducible polynomial is, roughly speaking, a non-constant polynomial that cannot be factored into the product of two non-constant polynomials.
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John Horton Conway
John Horton Conway FRS (born 26 December 1937) is an English mathematician active in the theory of finite groups, knot theory, number theory, combinatorial game theory and coding theory.
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Latin
Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.
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Mathematics Magazine
Mathematics Magazine is a refereed bimonthly publication of the Mathematical Association of America.
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Mausoleum of Prince Ernst
The Mausoleum of Prince Ernst in Stadthagen, Lower Saxony, is a mausoleum erected by Ernst of Schaumburg (d. 1622) and his widow Hedwig of Hesse-Kassel in the years 1620-1627.
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Minimal polynomial (field theory)
In field theory, a branch of mathematics, the minimal polynomial of a value α is, roughly speaking, the polynomial of lowest degree having coefficients of a specified type, such that α is a root of the polynomial.
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Neusis construction
The neusis is a geometric construction method that was used in antiquity by Greek mathematicians.
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Numeral prefix
Numeral or number prefixes are prefixes derived from numerals or occasionally other numbers.
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Optic equation
In number theory, the optic equationDickson, L. E., History of the Theory of Numbers, Volume II: Diophantine Analysis, Chelsea Publ.
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Orthographic projection
Orthographic projection (sometimes orthogonal projection), is a means of representing three-dimensional objects in two dimensions.
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Petrie polygon
In geometry, a Petrie polygon for a regular polytope of n dimensions is a skew polygon in which every (n – 1) consecutive sides (but no n) belongs to one of the facets.
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Pierpont prime
A Pierpont prime is a prime number of the form for some nonnegative integers and.
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Poincaré disk model
In geometry, the Poincaré disk model, also called the conformal disk model, is a model of 2-dimensional hyperbolic geometry in which the points of the geometry are inside the unit disk, and the straight lines consist of all segments of circles contained within that disk that are orthogonal to the boundary of the disk, plus all diameters of the disk.
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Point group
In geometry, a point group is a group of geometric symmetries (isometries) that keep at least one point fixed.
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Polygon
In elementary geometry, a polygon is a plane figure that is bounded by a finite chain of straight line segments closing in a loop to form a closed polygonal chain or circuit.
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Radian
The radian (SI symbol rad) is the SI unit for measuring angles, and is the standard unit of angular measure used in many areas of mathematics.
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Radius
In classical geometry, a radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length.
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Regular polygon
In Euclidean geometry, a regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length).
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Reuleaux triangle
A Reuleaux triangle is a shape formed from the intersection of three circular disks, each having its center on the boundary of the other two.
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Ruler
A ruler, sometimes called a rule or line gauge, is a device with equally spaced markings along its length, used in geometry, technical drawing, engineering and building to measure distances or to rule straight lines.
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Schläfli symbol
In geometry, the Schläfli symbol is a notation of the form that defines regular polytopes and tessellations.
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Schoenflies notation
The Schoenflies (or Schönflies) notation, named after the German mathematician Arthur Moritz Schoenflies, is one of two conventions commonly used to describe point groups.
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Skew polygon
In geometry, a skew polygon is a polygon whose vertices are not all coplanar.
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Stadthagen
Stadthagen is the capital of the district of Schaumburg, in Lower Saxony, Germany.
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Tomahawk (geometry)
The tomahawk is a tool in geometry for angle trisection, the problem of splitting an angle into three equal parts.
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Twenty pence (British coin)
The British decimal twenty pence (20p) coin – often pronounced "twenty pee" – is a unit of currency equal to 20/100 of a pound sterling.
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United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain,Usage is mixed with some organisations, including the and preferring to use Britain as shorthand for Great Britain is a sovereign country in western Europe.
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Vending machine
A vending machine is an automated machine that provides items such as snacks, beverages, cigarettes and lottery tickets to consumers after money, a credit card, or specially designed card is inserted into the machine.
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Vertex (geometry)
In geometry, a vertex (plural: vertices or vertexes) is a point where two or more curves, lines, or edges meet.
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Zambian kwacha
The Kwacha (ISO 4217 code: ZMW) is the currency of Zambia.
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Zero of a function
In mathematics, a zero, also sometimes called a root, of a real-, complex- or generally vector-valued function f is a member x of the domain of f such that f(x) vanishes at x; that is, x is a solution of the equation f(x).
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6-simplex
In geometry, a 6-simplex is a self-dual regular 6-polytope.
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Redirects here:
7 symmetry, 7-gon, Heptagonal, Regular heptagon, Septagon.
References
[1] https://en.wikipedia.org/wiki/Heptagon
