Cardioid constructions, various
Explore various methods for constructing a cardioid.
Toggle each of the 4 check boxes, read the brief descriptions, and study each construction method.
In each case, let your eye follow point A along a cardioid-shaped path.
Use "animate" button and "speed" slider to control animation.
Try out the "trace" and "cardioid" check boxes to make the cardioid appear on screen.
Notice that some geometry is shared between multiple construction methods.