The EUR/USD indeed completed a wave 4 (blue) and broke below the trend line support (dotted blue). The bearish momentum is most likely a wave 3 (purple) and the triangle (red/blue) could be part of the wave 4 (purple).
The potential 5th wave (purple) would most likely complete wave 1 (brown).
The EUR/USD is still trapped in between strong support (blue) and resistance (red) and would need to break these levels before a potential trend could start.
Origin: Admiral Markets