The definition of a hero in literature is:
-
A hero/heroine is a character who, in the face of danger, displays courage, bravery, or self-sacrifice for the greater good.
The term hero/heroine usually refers to <u>the main or principal character in a literary work</u>, also known as a <u><em>protagonist</em></u>, but the first option has the most correct details.
The cross section of the brick is rectangle in shape.
Hope that helps. :)