AUD/CAD BreakDown?

You can see the obvious formation of a descending triangle pattern which is preceded in its primary phase by a downward impulse and since this is a continuation pattern, the price would seek to break downward, heading to the bottom of the OB in 4h , approximately in .91100-.90863

If you are looking for an optimal entry for sales, this would be in my opinion when the price approaches the OB of 1h, either at the initial edge or at the final edge as shown, always remember to have good management

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