Diagonal Triangle
Elliott Wave Theory glossary · Core Axioms & Motive Wave Rules
Definition
A ve-wave pattern in the shape of a wedge, where Wave 4 overlaps Wave 1. Ending diagonals have corrective internals; leading diagonals have impulse internals.
Diagonal Triangle in plain English
Elliott Wave says a price trend usually unfolds in five pushes, and normally Wave 4 (a pullback) stays clear of the ground Wave 1 already covered — the pushes don't overlap. A diagonal triangle is the exception: the five waves squeeze into a narrowing (or slightly widening) wedge, and Wave 4 actually dips back into Wave 1's territory, like a car swerving between lane lines instead of driving straight. The overlap plus the wedge shape are the giveaway. If it shows up at the very end of a move it's an 'ending' diagonal (its five sub-waves are each three-part corrective wiggles); if it kicks off a move it's a 'leading' diagonal (its sub-waves are stronger five-part pushes).
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