# In+circumference

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**Radian**— For other uses, see Radian (disambiguation). mrad redirects here. For millirads, see Rad (unit). An angle of 1 rad …122

**Dimensionless quantity**— In dimensional analysis, a dimensionless quantity or quantity of dimension one is a quantity without an associated physical dimension. It is thus a pure number, and as such always has a dimension of 1.[1] Dimensionless quantities are widely used… …123

**Central obesity**— DiseaseDisorder infobox Name = Central obesity ICD10 = E66 ICD9 = ICD9|278 Central obesity, the apple shaped obesity commonly referred to as belly fat, is the accumulation of visceral fat (fat deposited between the internal organs in the torso)… …124

**Golden angle**— In geometry, the golden angle is the smaller of the two angles created by sectioning the circumference of a circle according to the golden section; that is, into two arcs such that the ratio of the length of the larger arc to the smaller is the… …125

**List of unusual units of measurement**— For units of measure primarily used in countries where English is not the main language, see the article specific to that country, a list of which can be found in the systems of measurement article. An unusual unit of measurement is a unit of… …126

**Wheel sizing**— The wheel size for a motor vehicle or similar wheel has a number of parameters. Contents 1 Bolt pattern 2 Bolt circle 2.1 Determining the bolt circle 3 Lug n …127

**Comparison of Canadian and American football**— Canadian and American football are very similar, as both have their origins in rugby. As such, the rules of these sports are very similar, although a comparison illustrates some key differences.HistoryFootball was introduced to North America in… …128

**Planar algebra**— In mathematics, planar algebras first appeared in the work of Vaughan Jones on the standard invariant of a II1 subfactor [http://www.math.berkeley.edu/ vfr/plnalg1.ps] . They also provide an appropriate algebraic framework for many knot… …