# Symbols:Greek/Rho/Radius of Curvature

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## Radius of Curvature

$\rho$

The radius of curvature of a curve $C$ at a point $P$ is defined as the reciprocal of the absolute value of its curvature:

$\rho = \dfrac 1 {\left\lvert{k}\right\rvert}$

The $\LaTeX$ code for $\rho$ is \rho .