The Aussie dollar is set to kick off an impulsive decline to the down side after breaking below a four year bearish triangle. The pattern for now is labeled a bearish (A) (B) (C) correction that began in March 2011. So far it's clear wave (A) & (B) are complete with wave (C) now in progress. The appearance of a triangle is always before the final move of any pattern, in this case wave (C) of a zing zag. The most common downside target for a zig zag is wave (C) is equal to wave (A) in price and sometimes time alternately (C) will travel .618 of (A).