 List of circle topics

This list of circle topics includes things related to the geometric shape, either abstractly, as in idealizations studied by geometers, or concretely in physical space. It does not include metaphors like "inner circle" or "circular reasoning" in which the word does not refer literally to the geometric shape.
Contents
Geometry and other areas of mathematics
 Annulus (mathematics)
 Apollonian circles
 Apollonian gasket
 Arbelos
 Archimedean circle
 Archimedes' circles
 Archimedes' quadruplets
 Area of a disk
 Bankoff circle
 Thomas Baxter (mathematician)
 Belt problem
 Bertrand's paradox (probability)
 Bicentric quadrilateral
 Bipolar coordinates
 Bonnesen's inequality
 Borromean rings
 Brahmagupta's formula
 Brocard circle
 Buffon's needle
 Butterfly theorem
 Carnot's theorem
 Casey's theorem
 Centered trochoid
 Circle
 Central angle
 Circle bundle
 Circle graph
 Circle group
 Group of rational points on the unit circle
 Circle map
 Circle packing
 Circle packing in a circle
 Circle packing in an equilateral triangle
 Circle packing in an isosceles right triangle
 Circle packing theorem
 Circles of Apollonius
 Circle of antisimilitude
 Circular algebraic curve
 Circular distribution
 Circular sector
 Circular segment
 Circular statistics
 Circular surface
 Circumference
 Circumscribed circle — Circumcircle
 Clifford's circle theorems
 Coaxal circles
 Compass and straightedge
 Concentric
 Concyclic
 Coxeter's loxodromic sequence of tangent circles
 Cyclic quadrilateral
 Cycloid
 Descartes' theorem
 Diameter
 Dinostratus' theorem
 Director circle
 Disk (mathematics)
 Dividing a circle into areas
 Epitrochoid
 Equal incircles theorem
 Extangential quadrilateral
 Fermat–Apollonius circle
 Five circles theorem
 Ford circle
 Fuhrmann circle
 Gauss circle problem
 Geometrography
 Generalised circle
 Gershgorin circle theorem
 GEOS circle
 Great circle
 Hadamard threecircle theorem
 Hardy–Littlewood circle method
 Hawaiian earring
 Homothetic center
 Horn angle
 Horocycle
 Hypotrochoid
 Incircle and excircles of a triangle
 Inscribed angle
 Inscribed angle theorem
 Inscribed circle
 Inversive distance
 Inversive geometry
 Irrational rotation
 Isodynamic point
 Isoperimetric problem
 Japanese theorem for concyclic polygons
 Japanese theorem for concyclic quadrilaterals
 Johnson circles
 Lemoine line
 Lester's theorem
 Limiting cases of Apollonius' problem
 List of topics related to pi
 Lune
 Lune of Hippocrates
 Magic circle (mathematics)
 Malfatti circles
 Measurement of a Circle
 Midpointstretching polygon
 MilneThomson circle theorem
 Miquel's theorem
 Monge's theorem
 Mean of circular quantities
 Mrs. Miniver's problem
 Ninepoint circle
 Osculating circle
 Ortsbogen theorem
 Pappus chain
 Peaucellier–Lipkin linkage
 Pi
 Pivot theorem
 Pizza theorem
 Pole and polar
 Polygoncircle graph
 Poncelet's porism
 Power center (geometry)
 Power of a point
 Problem of Apollonius
 Proof that pi is irrational
 Ptolemy's theorem
 Ptolemy's table of chords
 Radical axis
 Radius
 Regiomontanus' angle maximization problem
 Riemannian circle
 Robbins pentagon
 Salinon
 Schoch line
 Schoch circles
 Semicircle
 Seven circles theorem
 Six circles theorem
 Smallest circle problem
 Spieker circle
 Splitting circle
 Squaring the circle
 Squircle
 Steiner chain
 Tammes problem
 Tangent lines to circles
 Tangent circles
 Tangential quadrilateral
 Tarski's circlesquaring problem
 Thales' theorem
 Unit circle
 Versor
 Villarceau circles
 von Mises distribution
 Wigner semicircle distribution
 Woo circles
 Wrapped distribution
 Wrapped Cauchy distribution
 Wrapped normal distribution
Physics
 Centrifugal force
 Centripetal force
 Circle of confusion
 Circular dichroism
 Circular orbit
 Mohr's circle
 Nonuniform circular motion
 Thomson problem
 Uniform circular motion
Geography
Artifacts
 Addendum circle
 Belt problem
 Circular ditches
 Circular slide rule
 Compass (drafting)
 Crop circle
 Dip circle
 List of gear nomenclature
 Peaucellier–Lipkin linkage
 Pitch circle
 Repeating circle
 Timber circle
 Traffic circle
 Setting circles
 Stone circle
 Wheel
Glyphs and symbols
 Borromean rings
 Circled dot
 Circles in Polish mythology
 Crescent
 Enso
 Flower of Life
 Olympic emblem
 Ouroboros
 Petosiris to Nechepso
 Quatrefoil
 Ring (diacritic)
 Roundel
 Sacred Chao
 Shield of the Trinity
 Solar symbols
 Squaredcircle postmark
 Sun cross
 Symbol of Tanit
 Trefoil
 Triquetra
 Vesica piscis
 Triple Goddess symbol
 Yinyang
Other
See also
Categories: Mathematicsrelated lists
 Circles
 Outlines
Wikimedia Foundation. 2010.