Göttingen Collection of Mathematical Models and Instruments

Case number 10

Left-hand helix Right-hand helix Rotational surfaces, asymptote lines Rotational surfaces, asymptote lines
Rotational surfaces, asymptote lines Rotational areas, asymptote lines Curvature centre point surface of the single-leaf hyperboloid Curvature centre point surface of the single-leaf hyperboloid
Developable helicoid Curvature centre point surface of the single-leaf hyperboloid 17 wooden cones with all types of conic sections
Curvature centre point surface Curvature centre point surface of the triaxial ellipsoid Curvature centre point surface of the triaxial ellipsoid
Rotational surfaces, asymptote lines Helical surface Pipe helicoid with curve lines
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