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A cylinder has a circular cross section that is parallel to its base.
A hyperboloid.A sphere, ellipsoid, toroid or paraboloid intersected by a plane.There are probably others.A hyperboloid.A sphere, ellipsoid, toroid or paraboloid intersected by a plane.There are probably others.A hyperboloid.A sphere, ellipsoid, toroid or paraboloid intersected by a plane.There are probably others.A hyperboloid.A sphere, ellipsoid, toroid or paraboloid intersected by a plane.There are probably others.
A sphere, a cone, a section of a sphere or ellipsoid, a torus (doughnut) sliced by a plane perpendicular to its axis, a paraboloid. These are some examples.
trapezoidal cross section
Every cross-section of a sphere is a circle.