\begin{definition}[Definition:Rhodonea Curve/Order]
Let $R$ be a '''rhodonea curve''' defined by one of the polar equations:
{{begin-eqn}}
{{eqn | l = r
      | r = a \cos n \theta
}}
{{eqn | l = r
      | r = a \sin n \theta
}}
{{end-eqn}}
The number $n$ is the '''order''' of $R$.
Category:Definitions/Rhodonea Curves
\end{definition}