# Limacon Graphics Gallery

## Interchange of Parameters

Limacon of Pascal as a conchoid of a circle with radius “r” and offset “k” is equivalent to:

- Epitrochoid with parameters {1,1,2 r/k}.
- Pedal of a circle with radius k and pedal point “2 r” distant from the center of circle.
- Envelope of circles with centers on a base circle B of radius k and each passing a point “2 r” distant from the center of base circle B.