1 2 3 1 _ _ _ 2 _ _ _ 3 _ _ _ ACROSS 1) a belief (or system of beliefs) accepted as authoritative by some group or school 2) the former capital and 2nd largest city of brazil; chief brazilian port; famous as a tourist attraction 3) a human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb DOWN 1) 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 2) term of address for a man 3) informal terms for a mother ** Scroll down for solution. ** Are you sure you want to peek? ism rio arm