List of circle topics

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This list of circle topics is not intended for metaphorical circles, but rather for topics related to the geometric shape. Thus, for example, a link to inner circle does not belong here.

Geometry

Ford circles.

• Apollonian circles
• Apollonian gasket
• Arbelos
• Bertrand's paradox (probability)
• Borromean rings
• Buffon's needle
• Butterfly theorem
• Central angle
• Circle
• Circle group
• Circles of Apollonius
• Circumference
• Circumscribed circle — Circumcircle
• Concyclic
• Descartes' theorem
• Diameter
• Disk (mathematics)
• Dividing a circle into areas
• Ford circle
• Great circle
• * Great-circle distance
• * Small circle
• Hadamard three-circle theorem
• Hardy-Littlewood circle method
• Incircle and excircles of a triangle
• Inscribed angle
• Inscribed circle
• Inversive geometry
• Isodynamic point
• Isoperimetric problem
• Lemoine line
• List of topics related to π
• Malfatti circles
• Mrs. Miniver's problem
• Nine-point circle
• Osculating circle
• π (pi)
• Power of a point
• Problem of Apollonius
• Ptolemaios' theorem
• Radius
• * Radius of convergence
• * Radius of curvature
• compass and straightedge
• * Mohr-Mascheroni theorem
• *Poncelet-Steiner theorem
• Semicircle
• Squaring the circle
• Tarski's circle-squaring problem
• Unit circle
• Villarceau circles
• Wigner semicircle distribution

Geography

A great circle on a sphere

• Arctic Circle
• Antarctic Circle
• Circle of latitude
• Equator
• Great circle
• * Great-circle distance
• * Small circle
• Position circle

Artifacts

A driving wheel on a steam locomotive.

• Compass (drafting)
• Crop circle
• Dip circle
• Timber circle
• Traffic circle
• Stone circle
• Wheel

Glyphs and symbols

• Borromean rings
• Circle with a point at its center
• Circles in Polish mythology
• Consistent Life Ethic symbol
• Crescent
• Flower of Life
• Gnostic circle
• Magic circle (Wicca)
• Olympic emblem
• Ouroboros
• Quatrefoil
• Ring (diacritic)
• Sacred Chao
• Shield of the Trinity
• Solar symbols
• Squared-circle postmark
• Sun cross
• Symbol of Tanit
• Trefoil
• Triquetra
• Urantia symbols
• Vesica piscis
• Triple Goddess symbol
• Yin-yang

See also

• Ring (a disambiguation page)

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