Assertion: curvature's curvature | /r/HasProperty | reciprocal of the radius
Facets:
value: at every point on a circle
type: LOCATION
Source sentences:
text: At every point on a circle, the curvature is the reciprocal of the radius; for other curves (and straight lines, which can be regarded as circles of infinite radius), the curvature is the reciprocal of the radius of the circle that most closely conforms to the curve at the given point (see figure).