What's the sum of exterior angles of any polygon regardless of its number of sides?

360 degrees

Who is the fictional villain from the 1977 movie series Star Wars who wears a black mask? Who was the first men's singles tennis player to achieve a career Grand Slam? What kind of fruit is a 'Granny Smith'? Who accidentally sleeps in Ross's apartment, unknowingly leading him to think there's a burglar? Which NBA player is nicknamed "The Admiral"?