1. identify the main character as flat or round. then identify two personality traits.

I'd say round. Overall, Mathilde is portrayed as a very positive, admirable character, though she exhibits some tendency to aspire to materialism, and she is soemtimes infatuated by it. She is definitely not negative, for in paragraphs 99–104, Maupassant describes the massive effort that she exerts to help pay the debt. The heroism that the speaker attributes to her suggests that readers, finally, are justified in admiring her. The quality of character that is a first cause of the misfortune, however, is her refusal to accept the reality of her genteel poverty and her desire to use the borrowed necklace to appear prosperous.