Triodetic domes are different than what thin-shell structure in that they lack full spheres?
Triodetic dome: Triodetic dome is a partial dome structure that is similar but different from Geodesic dome in that it is not a full sphere. Geodesic dome: A geodesic dome is a hemispherical thin-shell structure (lattice-shell) based on a geodesic polyhedron.
geodesic dome