1 2 3 1 _ _ _ 2 _ _ _ 3 _ _ _ ACROSS 1) the cardinal number that is the sum of nine and one; the base of the decimal system 2) a militant organization of irish nationalists who used terrorism and guerilla warfare in an effort to drive british forces from northern ireland and achieve a united independent ireland 3) the bill in a restaurant DOWN 1) either of two soft fleshy milk-secreting glandular organs on the chest of a woman 2) a period marked by distinctive character or reckoned from a fixed point or event 3) tag the base runner to get him out ** Scroll down for solution. ** Are you sure you want to peek? ten ira tab