Editing Pedal curve (section)

===Example===
[[Image:PedalCurve2.gif|500px|right|thumb|[[Limaçon]]&nbsp;— pedal curve of a [[circle]]]]When ''C'' is a circle the above discussion shows that the following definitions of a [[limaçon]] are equivalent:
*It is the pedal of a circle.
*It is the envelope of circles whose diameters have one endpoint on a fixed point and another endpoint which follow a circle.
*It is the envelope of circles through a fixed point whose centers follow a circle.
*It is the [[Roulette (curve)|roulette]] formed by a circle rolling around a circle with the same radius.

We also have shown that the catacaustic of a circle is the evolute of a limaçon.
{{Clear}}