how close did the trolls live in relation to each other? some are close, like vriska with terezi and equius, but others have got to be far away, like eridan and feferi from everyone else. is the full extent of where they all live ever established in canon?

We don’t actually know how close Terezi and Vriska actually lived to each other- They did FLARP together, but Vriska also had a ship so like. It could still be a ways away. Vriska is Equius’ neighbour, Feferi and Eridan live relatively close as well, Nepeta and Equius live extremely far apart, Sollux and Aradia live a bit away from each other but still close enough that you can see his apartment from her place, annnd… I believe that’s all we know.