  Jet substructure observables provide powerful tools to search for new physics
and test theoretical descriptions of perturbative and non-perturbative
processes in QCD. In heavy-ion collisions, jet substructure observables are
used to elucidate the structure and dynamics of the quark-gluon plasma. Jet
mass is one such observable, which probes the virtuality of hard-scattered
partons and their modified fragmentation. Additionally, generalized jet
angularities provide a powerful tool for differential measurements of the jet
shower and its modification, as two parameters vary the weight of the jet
constituents' relative angle and $p_\mathrm{T}$. Previous measurements of the
jet mass and jet angularities have shown conflicting differences in comparison
with models. To clarify these results, we present new measurements of the jet
mass and jet angularities using an identical jet sample. The high-precision
tracking system of ALICE enables these measurements over a broad range in
$p_\mathrm{T}$, with low-$p_\mathrm{T}$ reach that is unique at the LHC. We
report the generalized jet mass and jet angularities using charged-particle
tracks in Pb-Pb collisions at $\sqrt{s_\mathrm{NN}} = 5.02$ TeV. Various jet
angularity parameters are investigated for the jet resolution parameter $R =
0.2$. Results are compared to pp collisions and theoretical models.
