  We consider GL$_m$-dimers of triangulations of regular convex $n$-gons, which
give rise to a dimer model with boundary $Q$ and a dimer algebra $\Lambda_Q$.
Let $e_b$ be the sum of the idempotents of all the boundary vertices, and
$\mathcal{B}_Q:= e_b \Lambda_Q e_b$ the associated boundary algebra. In this
article we show that given two different triangulations $T_1$ and $T_2$ of the
$n$-gon, the boundary algebras are isomorphic, i.e. $e_b \Lambda_{Q_{T_1}} e_b
\cong e_b \Lambda_{Q_{T_2}} e_b$.
