Case number 9

Surface of 4. order with 4 planes touching along circles Areas of 4. order with 4 circles touching along the plane Surface of 4. order with 4 planes touching along cicles Surface of 8. order
Surface of 4. order with 4 planes touching along cicles Surface of 4. order with double lines Surface of 4. order with a double line Surface of 4. order with 4 planes touching along cicles
Surface of 4. order with 4 planes touching along cicles Ring cyclide of Dupin Cyclide of Dupin Cyclide of Dupin
Horn cyclide of Dupin Spindel cyclide of Dupin Cyclide with a uniplanar double point Cyclide with a uniplanar double point
Cyclide with two conjugated imaginary double points and a real double point Cyclide of Dupin Parabolic horn cyclide of Dupin Cyclide with two conjugated imaginary double points

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