Any closed bend (comparable to a figure eight) explained by a Cartesian equation of this form .
The locus associated with the point at which the tangent to an equilateral hyperbola fulfills the perpendicular permit autumn upon it from center: a curve conceived by James Bernoulli.
Any crunodal curve of 4th purchase having only one real branch, which finite and shaped pertaining to two axes.
The locus of this point at which the tangent to a fixed conic is slashed by a perpendicular let autumn upon it from center.
A Cassinian: a misapplication of this term originating in Germany.
The locus regarding the part of that your right through center together with projection of a place of a circle on a fixed tangent are cut because of the perpendicular from this point out the diameter from the contact point.