How many diagonals does a triangle have?

More Questions:

What faddish word comes from the Japanese for "single number"?

What magazine began publishing its annual list of the 500 most-successful companies in the US in 1955?

In the standard Monopoly game, how much money do you collect for finishing second in a beauty contest?

How did UN Secretary General Dag Hammarskjöld die in September, 1961?

Which African country has a domain of .tn?

What bathroom cleaner was originally advertised by the Scrubbing Bubbles?

What did Aristotle claim as the most delicate of table meats?

Which three states share a border with California?

How fast can bees fly?

Who recorded the 1955 song "Ain't That a Shame"?

What TV show title character was played by pop singer Brandy?

From which bridge did Barry Miller fall from in the 1977 movie "Saturday Night Fever"?

In the TV show "The Simpsons', what is the name of Springfield's water park?

On what American network were you able to watch the TV show “The Beatles” from 1965 until 1969?

What serial killer struck in London in 1888?