Case number 40

The curve as example Extended rotational ellipsoid with 3 geodetic lines Single-leaf hyperboloid and confocal double-leaf ellipsoid Single-leaf hyperboloid and confocal ellipsoid
Measuring apparatus for curves of constant width Curves of constant width Curve of constant width Measuring apparatus for curves of constant width
Curve of constant width Curve of constant width Curve of constant width
Rotational surfaces of constant negative curvature Minimal surface of 9. order (Enneper) with curvature lines Minimal surface with lemniscate as geodetic line

The corresponding bottom case is: Case number U 40

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