cardioid

cardioid, heart-like form, is a plane curve traced by a point on the perimeter of a circle that is rolling around a fixed circle of the same radius. It can also be defined as an epicycloid having a single cusp. It is also a type of sinusoidal spiral and an inverse curve of the parabola with the focus as the center of inversion.

cardioid

A cardioid, heart-like form, is a plane curve traced by a point on the perimeter of a circle that is rolling around a fixed circle of the same radius....