  We study a primitive vehicle routing-type problem in which a fleet of $n$unit
speed robots start from a point within a non-obtuse triangle $\Delta$, where $n
\in \{1,2,3\}$. The goal is to design robots' trajectories so as to visit all
edges of the triangle with the smallest visitation time makespan. We begin our
study by introducing a framework for subdividing $\Delta$into regions with
respect to the type of optimal trajectory that each point $P$ admits,
pertaining to the order that edges are visited and to how the cost of the
minimum makespan $R_n(P)$ is determined, for $n\in \{1,2,3\}$. These
subdivisions are the starting points for our main result, which is to study
makespan trade-offs with respect to the size of the fleet. In particular, we
define $ R_{n,m} (\Delta)= \max_{P \in \Delta} R_n(P)/R_m(P)$, and we prove
that, over all non-obtuse triangles $\Delta$: (i) $R_{1,3}(\Delta)$ ranges from
$\sqrt{10}$ to $4$, (ii) $R_{2,3}(\Delta)$ ranges from $\sqrt{2}$ to $2$, and
(iii) $R_{1,2}(\Delta)$ ranges from $5/2$ to $3$. In every case, we pinpoint
the starting points within every triangle $\Delta$ that maximize $R_{n,m}
(\Delta)$, as well as we identify the triangles that determine all $\inf_\Delta
R_{n,m}(\Delta)$ and $\sup_\Delta R_{n,m}(\Delta)$ over the set of non-obtuse
triangles.
