Radius
From Encyclopedia of Mathematics - Reading time: 1 min
of a circle
A segment joining a point of the circle (or sphere) to the centre. The length of this segment is also called the radius.
Comments[edit]
For the radius of curvature of curves, surfaces and higher-dimensional differential-geometric objects, cf. e.g. Curvature and Differential geometry.
References[edit]
| [a1] | M. Berger, "Geometry" , I , Springer (1987) |
| [a2] | H.S.M. Coxeter, "Introduction to geometry" , Wiley (1963) |
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