The Eudoxo campilla (Greek καμπύλη: curve) is a curve determined by a Cartesian equation.

The Eudoxus campilla is constructed from the unit circumference, c with center O, taking on it a point P at which the tangent to c is drawn.

This piece is the first piece in a series of six pieces. The series is designed based on the "Eudoxus campilla" curve.