How does the author's use of flashback in paragraph 3 affect the story

So basically put how it affects the story as the question states ex. The flashback affected the story because it showed us how when she was a little girl she was always singing but now she never sings at all without the flashback we would not know why she doesn’t sing anymore

right angles are formed by perpendicular lines. if the lines would extend, to make two intersecting lines, they would form four right angles.

the time most likely will repeat, in the story.