What do geometric-shape characters best help the reader visualize?

The speaker in the “to a mouse” regrets that the mouse runs away so fast because the

Fine fellow, that lebrun," said arobin when robert had gone. "i never heard you speak of him.""i knew him last summer at grand isle," she replied.  what becomes apparent during this conversation? robert and arobin are both aware they are rivals for edna’s affections.arobin is unaware of robert’s role in edna’s life, but robert is aware of arobin’s role.robert is completely unaware of arobin’s romantic intentions and love for edna.robert has much more confidence in himself than arobin does.

"ten from the sea to the sand he walks,to look in the soil, but not in the box''!