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Curve from a cone intersecting a plane
A conic section, conic or a quadratic curve is a curve obtained from a cone's surface intersecting a plane. The three types of conic section are the hyperbola
Conic_section
Concept in mathematics
of conic sections permits the tools of linear algebra to be used in the study of conic sections. It provides easy ways to calculate a conic section's axis
Matrix representation of conic sections
Matrix_representation_of_conic_sections
Ancient Greek geometer and astronomer (c. 240–190 BC)
was an ancient Greek geometer and astronomer known for his work on conic sections. Beginning from the earlier contributions of Euclid and Archimedes on
Apollonius_of_Perga
Geometric shape
circular the intersection of a plane with the lateral surface is a conic section. In general, however, the base may be any shape and the apex may lie
Cone
Plane curve: conic section
directrix and the focus. Another description of a parabola is as a conic section, created from the intersection of a right circular conical surface and
Parabola
Unique point and line of a conic section
reciprocal relationship with respect to a given conic section. Polar reciprocation in a given conic section is the transformation of each point in the plane
Pole_and_polar
Shape with six sides
Mysticum Theorem") states that if an arbitrary hexagon is inscribed in any conic section, and pairs of opposite sides are extended until they meet, the three
Hexagon
Curve used in computer graphics and related fields
segment of a parabola. As a parabola is a conic section, some sources refer to quadratic Béziers as "conic arcs". With reference to the figure on the
Bézier_curve
2nd-degree plane curve which is reducible
In geometry, a degenerate conic is a conic (a second-degree plane curve, defined by a polynomial equation of degree two) that fails to be an irreducible
Degenerate_conic
Limiting case which is different from the rest of the class
a conic section is degenerate if and only if it has singular points (e.g., point, line, intersecting lines). A degenerate conic is a conic section (a
Degeneracy_(mathematics)
y=b.} A conic section is a curve that results from the intersection of a cone with a plane. There are three primary types of conic sections: ellipses
History_of_algebra
Proposition 5 in Apollonius. Heath, Thomas Little (1896). Treatise on conic sections. Cambridge, University press. p. 2. Blaga, Cristina; Blaga, Paul A.
Antiparallel_lines
Educational event against exam policy
The Conic Sections Rebellion, also known as the Conic Section Rebellion, refers primarily to an incident which occurred at Yale University in 1830, as
Conic_Sections_Rebellion
Characteristic of conic sections
conic section is a non-negative real number that uniquely characterizes its shape. One can think of the eccentricity as a measure of how much a conic
Eccentricity_(mathematics)
Cone with an elliptical base
image of a conic section is a conic section of the same type (ellipse, parabola, etc.), any plane section of an elliptic cone is a conic section (see Circular
Elliptic_cone
Conic sections with the same foci
In geometry, two conic sections are called confocal if they have the same foci. Because ellipses and hyperbolas have two foci, there are confocal ellipses
Confocal_conic_sections
1993 studio album by Evan Parker
Conic Sections is a solo soprano saxophone album by Evan Parker. It was recorded on June 21, 1989, at Holywell Music Room in Oxford, England, and was released
Conic_Sections_(album)
Theorem in projective geometry
mystical hexagram) states that if six arbitrary points are chosen on a conic (which may be an ellipse, parabola or hyperbola in an appropriate affine
Pascal's_theorem
Study of geometry using a coordinate system
quadratic equation in two variables is always a conic section – though it may be degenerate, and all conic sections arise in this way. The equation will be of
Analytic_geometry
Principle in geometry
conic (a degree-2 plane curve), just as two (distinct) points determine a line (a degree-1 plane curve). There are additional subtleties for conics that
Five_points_determine_a_conic
Plane curve
the other two forms of conic sections, parabolas and hyperbolas, both of which are open and unbounded. An angled cross section of a right circular cylinder
Ellipse
Parameter describing conic sections
In geometry, the conic constant (or Schwarzschild constant, after Karl Schwarzschild) is a quantity describing conic sections, and is represented by the
Conic_constant
Property of points all lying on a single line
Mysticum Theorem) states that if an arbitrary six points are chosen on a conic section (i.e., ellipse, parabola or hyperbola) and joined by line segments in
Collinearity
Coordinates comprising a distance and an angle
gives the same curve. A conic section with one focus on the pole and the other somewhere on the 0° ray (so that the conic's major axis lies along the
Polar_coordinate_system
Relates the tangent of half of an angle to trigonometric functions of the entire angle
In trigonometry, tangent half-angle formulas relate the tangent of half of an angle to trigonometric functions of the entire angle. The tangent of half
Tangent_half-angle_formula
Curved path of an object around a point
and that, in general, the orbits of bodies subject to gravity were conic sections, under his assumption that the force of gravity propagates instantaneously
Orbit
Set of points equidistant from a center
track of satellites in polar orbit. The analog of a conic section on the sphere is a spherical conic, a quartic curve which can be defined in several equivalent
Sphere
Method to calculate trajectory calculations for spacecraft
multiple two-body problems, for which the solutions are the well-known conic sections of the Kepler orbits. Although this method gives a good approximation
Patched_conic_approximation
Geometrical concept
produce plane sections that are often called contour lines in application areas. A cross section of a polyhedron is a polygon. The conic sections – circles
Cross_section_(geometry)
Polynomial function of degree two
polynomials are fundamental to the study of conic sections, as the implicit equation of a conic section is obtained by equating to zero a quadratic polynomial
Quadratic_function
Relationship between two figures of the same shape and size, or mirroring each other
group E(n)) with f(A) = B. Congruence is an equivalence relation. Two conic sections are congruent if their eccentricities and one other distinct parameter
Congruence_(geometry)
Plane curve: conic section
one of the three kinds of conic section, formed by the intersection of a plane and a double cone. (The other conic sections are the parabola and the ellipse
Hyperbola
Ancient Greek mathematician (fl. 300 BC)
theorems from a small set of axioms. He also wrote works on perspective, conic sections, spherical geometry, number theory, and mathematical rigour. In addition
Euclid
Method for estimating new data outside known data points
to Runge's phenomenon. A conic section can be created using five points near the end of the known data. If the conic section created is an ellipse or
Extrapolation
Curve on the sphere analogous to an ellipse or hyperbola
spherical analog of a conic section (ellipse, parabola, or hyperbola) in the plane, and as in the planar case, a spherical conic can be defined as the locus
Spherical_conic
Function of the coefficients of a polynomial that gives information on its roots
the surface has real points, and has a negative Gaussian curvature. A conic section is a plane curve defined by an implicit equation of the form a x 2 +
Discriminant
Topics referred to by the same term
botany and zoology Section (botany) Section (geology), a diagram representing geologic features intersecting a vertical plane Conic section, intersection of
Section
Transformation of coordinates through an angle
non-degenerate conic section given by equation (9) can be identified by evaluating B 2 − 4 A C {\displaystyle B^{2}-4AC} . The conic section is: an ellipse
Rotation of axes in two dimensions
Rotation_of_axes_in_two_dimensions
Geometric point from which certain types of curves are constructed
is constructed. For example, one or two foci can be used in defining conic sections, the four types of which are the circle, ellipse, parabola, and hyperbola
Focus_(geometry)
define a non-degenerate projective conic section in a projective plane over a field. The usual definition of a conic in projective space uses a quadratic
Steiner_conic
Simple curve of Euclidean geometry
2})-(y_{3}-y_{2})(x_{3}-x_{1})}}.} In homogeneous coordinates, each conic section with the equation of a circle has the form x 2 + y 2 − 2 a x z − 2 b
Circle
Type of construction
line c, divide lines a and b harmonically. Given a conic section q and a point P not on the conic section, it is possible to construct the polar line π of
Straightedge-only construction
Straightedge-only_construction
Astrodynamic equation
the square of the distance (such as gravity), has an orbit that is a conic section (i.e. circular orbit, elliptic orbit, parabolic trajectory, hyperbolic
Orbit_equation
significant advances to the study of conic sections, showing that one can obtain all three varieties of conic section by varying the angle of the plane that
History_of_mathematics
Type of lens
is the conic constant, as measured at the vertex (where r = 0 {\displaystyle r=0} ). In this case, the surface has the form of a conic section rotated
Aspheric_lens
Time-telling device
surface, will trace out a conic section, such as a hyperbola, ellipse or (at the North or South Poles) a circle. This conic section is the intersection of
Sundial
Method of representing curves and surfaces in computer graphics
they cannot represent it exactly. Rational splines can represent any conic section—including the circle—exactly. This representation is not unique, but
Non-uniform_rational_B-spline
Laws in physics about force and motion
be conic sections, that is, ellipses (including circles), parabolas, or hyperbolas. The eccentricity of the orbit, and thus the type of conic section, is
Newton's_laws_of_motion
Locus of the zeros of a polynomial of degree two
In mathematics, a quadric or quadric surface is a generalization of conic sections (ellipses, parabolas, and hyperbolas). In three-dimensional space, quadrics
Quadric
generalized conic is a geometrical object defined by a property which is a generalization of some defining property of the classical conic. For example
Generalized_conic
In classical mechanics and ballistics, the parabola of safety or safety parabola is the envelope of the parabolic trajectories of projectiles shot from
Parabola_of_safety
Symmetric figure defined by a hyperbola
original hyperbola. A hyperbola and its conjugate may be constructed as conic sections obtained from an intersecting plane that meets tangent double cones
Conjugate_hyperbola
Number of intersection points of algebraic curves and hypersurfaces
singular point, and the intersection multiplicity is at least two. Two conic sections generally intersect in four points, some of which may coincide. To properly
Bézout's_theorem
A toric section is an intersection of a plane with a torus, just as a conic section is the intersection of a plane with a cone. Special cases have been
Toric_section
Classical approach to the many-body problem of astronomy
follows under the gravitational effect of one other body only is a conic section, and can be described in geometrical terms. This is called a two-body
Perturbation_(astronomy)
Mathematical idealization of the trace left by a moving point
standard compass and straightedge construction. These curves include: The conic sections, studied in depth by Apollonius of Perga The cissoid of Diocles, studied
Curve
Perpendicular diameters of a circle or hyperbolic-orthogonal diameters of a hyperbola
In geometry, two diameters of a conic section are said to be conjugate if each chord parallel to one diameter is bisected by the other diameter. For example
Conjugate_diameters
Distance between the centers of externally tangent objects
In geometry, the distance of closest approach of two objects is the distance between their centers when they are externally tangent (touching without overlap)
Distance_of_closest_approach
Shape formed from points common to other shapes
using Newton iteration. Intersection problems between a line and a conic section (circle, ellipse, parabola, etc.) or a quadric (sphere, cylinder, hyperboloid
Intersection_(geometry)
Amount by which an orbit deviates from a perfect circle
The term derives its name from the parameters of conic sections, as every Kepler orbit is a conic section. It is normally used for the isolated two-body
Orbital_eccentricity
4th-century BC Greek mathematician
with the renowned philosopher Plato and for his apparent discovery of conic sections and his solution to the then-long-standing problem of doubling the cube
Menaechmus
Spheres tangent to a plane inside a cone
cone and the plane is a conic section, and the point at which either sphere touches the plane is a focus of the conic section, so the Dandelin spheres
Dandelin_spheres
Theorem about hexagons and conics
is a theorem stating that when a hexagon is circumscribed around a conic section, its principal diagonals (those connecting opposite vertices) meet in
Brianchon's_theorem
4th-century Alexandrian astronomer and mathematician
original text, and another commentary on Apollonius of Perga's treatise on conic sections, which has not survived. Many modern scholars also believe that Hypatia
Hypatia
Term in geometry; longest and shortest semidiameters of an ellipse
angles with the semi-major axis and has one end at the center of the conic section. For the special case of a circle, the lengths of the semi-axes are
Semi-major and semi-minor axes
Semi-major_and_semi-minor_axes
absolute points. In the real projective plane a von Staudt conic is a conic section in the usual sense. In more general projective planes this is not always
Von_Staudt_conic
Quadric surface with one axis of symmetry and no center of symmetry
derived from parabola, which refers to a conic section that has a similar property of symmetry. Every plane section of a paraboloid made by a plane parallel
Paraboloid
Geometric treatise by Archimedes
are quoted without proof from Euclid's Elements of Conics (a lost work by Euclid on conic sections). Propositions 4 and 5 establish elementary properties
Quadrature_of_the_Parabola
10th century Persian mathematician, physicist and astronomer
compass with one leg of variable length that allows users to draw any conic section: straight lines, circles, ellipses, parabolas and hyperbolas. It is
Abu_Sahl_al-Quhi
Limit of the tangent line at a point that tends to infinity
"fallen". The term was introduced by Apollonius of Perga in his work on conic sections, but in contrast to its modern meaning, he used it to mean any line
Asymptote
Surface drawn by a moving line passing through a fixed point
generally, when the directrix C {\displaystyle C} is an ellipse, or any conic section, and the apex is an arbitrary point not on the plane of C {\displaystyle
Conical_surface
Transformation of coordinates that moves the origin
the original ones. Through a change of coordinates, the equation of a conic section can be put into a standard form, which is usually easier to work with
Translation_of_axes
Topics referred to by the same term
associated with a process generating a geometric object, such as: Directrix (conic section) Directrix (ellipse) Directrix (generatrix) Directrix (rational normal
Directrix
1687 work by Isaac Newton
and orbits of conic-section form (Propositions 5–10). Propositions 11–31 establish properties of motion in paths of eccentric conic-section form including
Philosophiæ Naturalis Principia Mathematica
Philosophiæ_Naturalis_Principia_Mathematica
Mathematical curves generated by rolling other curves together
Point on the circle Cycloid Line Conic section Center of the conic Sturm roulette Line Conic section Focus of the conic Delaunay roulette Line Parabola
Roulette_(curve)
In geometry, an eleven-point conic is a conic associated to four points and a line, containing 11 special points.(Baker 1922, p. 49) Baker, Henry Frederick
Eleven-point_conic
Ancient Greek mathematician
the Conics of Apollonius, as criticising Conon concerning the maximum number of points with which a conic section can meet another conic section. Apollonius
Nicoteles_of_Cyrene
Persian polymath and poet (1048–1131)
solution for all third-degree polynomials by using the intersection of two conic sections, a method often later attributed to Descartes. Unlike Descartes, Khayyam
Omar_Khayyam
Theorem of 2D geometry
Poncelet's porism, states that whenever a polygon is inscribed in one conic section and circumscribes another one, the polygon must be part of an infinite
Poncelet's_closure_theorem
Problem in celestial mechanics
central gravitational force is observed to travel from point P1 on its conic trajectory, to a point P2 in a time T. The time of flight is related to
Lambert's_problem
Geometric objects with a common centre
spheres, regular polygons, regular polyhedra, parallelograms, cones, conic sections, and quadrics. Geometric objects are coaxial if they share the same
Concentric_objects
Type of differential equation
second-order in that region. This form is analogous to the equation for a conic section: A x 2 + 2 B x y + C y 2 + ⋯ = 0. {\displaystyle Ax^{2}+2Bxy+Cy^{2}+\cdots
Partial_differential_equation
1886 book by G. S. Carr
of theorems from Townsend's Modern Geometry and Salmon's Conic Sections. In Geometric Conics, the line of demonstration followed agrees, in the main,
Synopsis_of_Pure_Mathematics
Classical statement of gravity as force
Field variables Kepler orbit – Celestial orbit whose trajectory is a conic section in the orbital plane Newton's cannonball – Thought experiment about
Newton's law of universal gravitation
Newton's_law_of_universal_gravitation
Book series published by Encyclopædia Britannica
Lemmas The Method Treating of Mechanical Problems Apollonius of Perga On Conic Sections (translated by R. Catesby Taliaferro) Nicomachus of Gerasa Introduction
Great Books of the Western World
Great_Books_of_the_Western_World
Mathematical term
Treatise on Plane Co-Ordinate Geometry as Applied to the Straight Line and Conic Sections, London: Macmillan Weisstein, Eric W. "Slope". MathWorld--A Wolfram
Slope
Straight line segment that passes through the centre of a circle
sometimes used for the diameter of a conic section. In this context, a diameter is any chord which passes through the conic's centre. A diameter of an ellipse
Diameter
Topics referred to by the same term
the plural form of two different English words: Ellipse, a type of conic section in geometry Ellipsis, a three-dot punctuation mark (...) Ellipses may
Ellipses
Geometric model of the physical space
surface consisting of a non-degenerate conic section in a plane π and all the lines of R3 through that conic that are normal to π). Elliptic cones are
Three-dimensional_space
Curve created by a geometric operation
\tan \theta } which is the cissoid of Diocles. The polar equation of a conic section with one focus at the origin is, up to similarity r = 1 1 + e cos
Inverse_curve
Angular eccentricity is one of many parameters which arise in the study of the ellipse or ellipsoid. It is denoted here by α (alpha). It may be defined
Angular_eccentricity
Geometric figure
from the centre. As a particular conic, the hyperbola can be parametrized by the process of addition of points on a conic. The following description was
Unit_hyperbola
French polymath (1623–1662)
projective geometry; he wrote a significant treatise on the subject of conic sections at the age of 16. He later corresponded with Pierre de Fermat on probability
Blaise_Pascal
On zeros of derivatives of cubic polynomials
1090/S0002-9904-1920-03350-1. Marden, Morris (1945), "A note on the zeroes of the sections of a partial fraction", Bulletin of the American Mathematical Society,
Marden's_theorem
Portion of a disk enclosed by two radii and an arc
the circle and the two endpoints of the circular arc on the boundary. Conic section Earth quadrant Hyperbolic sector Sector of (mathematics) Spherical sector
Circular_sector
Field of classical mechanics concerned with the motion of spacecraft
Solving for p {\displaystyle p} and substituting the result in the conic section curve formula above, we get r = a ( 1 − e 2 ) 1 + e cos θ . {\displaystyle
Orbital_mechanics
Parabolic comet
Sir Isaac Newton showed that a body controlled by the Sun moves in a conic section—that is, an ellipse, a parabola or a hyperbola. Because the latter two
Great_Comet_of_1264
Determines the points needed for rasterizing a circle
Bresenham's line algorithm. The algorithm can be further generalized to conic sections. This algorithm draws all eight octants simultaneously, starting from
Midpoint_circle_algorithm
Relation between conic sections and triangles
Carnot's theorem (named after Lazare Carnot) describes a relation between conic sections and triangles. In a triangle A B C {\displaystyle ABC} with points C
Carnot's_theorem_(conics)
Circle-like pointset in a geometric plane
incidence properties. The standard examples are the nondegenerate conics. However, a conic is only defined in a pappian plane, whereas an oval may exist in
Oval_(projective_plane)
CONIC SECTION
CONIC SECTION
Surname or Lastname
English
English : from Middle English cony ‘rabbit’ (a back-formation from conies, from Old French conis, plural of conil), a nickname for someone thought to resemble a rabbit in some way or a metonymic occupational name for a dealer in rabbits or rabbit skins.
Surname or Lastname
English
English : of uncertain origin; possibly a topographic name for someone who lived where wormwood (Artemesia absinthium) grew, Middle English wormod, or a metonymic occupational name for a herbalist. In the Middle Ages wormwood was variously used as a tonic and vermifuge, in brewing ale, and to protect clothes and linen from moths and fleas.
Girl/Female
Gujarati, Hindu, Indian, Marathi, Telugu
Sunrise; Comic
Girl/Female
American, Arabic, Australian, British, Chinese, English
Stone of the Colic; The Gemstone Jade; Green in Colour
Boy/Male
Vietnamese
Section.
Boy/Male
Hindu, Indian
Boiled or Baked Buckwheat; Section
Biblical
a name applied to those who are born by Caesarean section
Boy/Male
Hindu, Indian
A Section; Portion; Festival; Strong; Occassion
CONIC SECTION
CONIC SECTION
Boy/Male
Assamese, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Mythological, Oriya, Sanskrit, Telugu
Lord Vishnu
Girl/Female
Hindu
Bearer of various weapons
Female
Yiddish
(ש×Ö°×¤Ö¼×¨Ö´×™× Ö°×¦×œ) Pet form of Yiddish Shprintze, SHPRINTZEL means "hope."
Boy/Male
Tamil
Duraimurugan | தà¯à®°à¯ˆà®®à¯à®°à¯à®•à®¨
Lord Murugan
Girl/Female
Tamil
Mascara, Eye liner
Girl/Female
Afghan, Arabic, French, Hindu, Indian, Muslim, Parsi
Angelic; Like a Fairy
Boy/Male
Bengali, Gujarati, Hindu, Indian, Malayalam, Marathi, Tamil, Telugu
Desire
Female
Dutch
, stern ruler.
Boy/Male
Indian
Servant of the expander, Extender
Surname or Lastname
Swiss German
Swiss German : variant of Wielan (see Wieland).English : unexplained.
CONIC SECTION
CONIC SECTION
CONIC SECTION
CONIC SECTION
CONIC SECTION
a.
Pertaining to the Ionic order of architecture, one of the three orders invented by the Greeks, and one of the five recognized by the Italian writers of the sixteenth century. Its distinguishing feature is a capital with spiral volutes. See Illust. of Capital.
a.
Of or pertaining to tension; increasing tension; hence, increasing strength; as, tonic power.
n.
Conic sections.
n.
Ionic type.
n.
One of a sect or school of philosophers founded by Antisthenes, and of whom Diogenes was a disciple. The first Cynics were noted for austere lives and their scorn for social customs and current philosophical opinions. Hence the term Cynic symbolized, in the popular judgment, moroseness, and contempt for the views of others.
a.
Comic, farcical.
a.
Of or pertaining to the colon; as, the colic arteries.
a.
Of or pertaining to a cone; as, conic sections.
a.
A combining form, meaning somewhat resembling a cone; as, conico-cylindrical, resembling a cone and a cylinder; conico-hemispherical; conico-subulate.
a.
Alt. of Conical
n.
A tonic.
a.
Tonic.
a.
Of or pertaining to colic; affecting the bowels.
n.
The Ionic dialect; as, the Homeric Ionic.
n.
A tonic element or letter; a vowel or a diphthong.
n.
Lead colic.
n.
A foot consisting of four syllables: either two long and two short, -- that is, a spondee and a pyrrhic, in which case it is called the greater Ionic; or two short and two long, -- that is, a pyrrhic and a spondee, in which case it is called the smaller Ionic.
n.
A verse or meter composed or consisting of Ionic feet.
n.
A conic section.
n.
The Ionic volute.