List of circle topics


Image:Ford circles.svg|350px|right|thumb|Ford circles.
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.

Geometry and other areas of mathematics

Circle
; Circle anatomyMeasurement of a Circle
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; Specific circles
; Circle-derived entities
; Circle-related theory
; Circle tangents in non-geometric theory
; Other topics

Physical sciences and engineering

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Geography

[Image:Sphere halve.png|thumb|right|A great circle on a sphere]

Artifacts

Image:Steam locomotive driving wheel.jpg|thumb|A driving wheel on a steam locomotive.

Glyphs and symbols