It means they are congruent. hope this helped, have an amazing day :)
It made more sense in the aspect that,yes Nick was one of the main characters but he was there to see a story unfold. To see who,how and why Gatsby,Daisy or Tom were they way that they were.
Answer:
He tried to make us act plays and to enter Into
masquerades, In which the characters were drawn from the heroes of Roncesvalles, of the Round Table of King Arthur
Explanation: I just learned about this yesterday