LEADING DIAGONAL: In a leading diagonal , waves 1,3, and 5 are all impulsive in nature or all in corrective form of zigzags. Wave 2 and wave 4 are always present in a zigzag form. A leading diagonal suggests the starting of a new wave & that is why it can develop wave 1 of a impulse wave and a first wave of a zigzag pattern.
Either a larger correction of higher...