Does there exist a compact subset $K$ of $\mathbb{R}^2$ and a point $p$ in $\mathbb{R}^2$ with the following property?
Let $x$ and $y$ be a pair of points in $K$ such that \begin{equation} |x-y| < \sup_{z,w \in K}|z-w| \end{equation} Then it is possible to rotate $K$ around its center to obtainthere exists a setrotation $K'$$R$ fixing $p$ such that $K'$$R(K)$ still contains both $x$ and $y$ and such that at least one if $x$ and $y$ lies in the interior of $K'$$R(K)$. You can take pretty much any definition you want for
Intuitively one would think that $p$ should in some sense be the 'center'‘center’ of $K$, but that’s not required for the application I have in mind.