High Quality Content by WIKIPEDIA articles! In geometry, the radius of curvature, R, of a curve at a point is a measure of the radius of the circular arc which best approximates the curve at that point. If this value taken to be positive when the curve turns anticlockwise and negative when the curve turns clockwise.Radius of curvature is a term characterizing the measure of how curved, or bent, a given curve or surface is. Different disciplines have different conventions concerning its definition and use.

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