A Hard Wedge aspect pattern includes 2 planets in opposition (180°), and a third apex planet in semi-square aspect (45°) to one of them and sesqui-quadrate (135°) to the other.
The energy of the Hard Wedge is one of irritation, annoyance or frustration that drives you to adjust and fine-tune your direction. The apex planet is usually the driving or disruptive force that spurs the opposing planets into further, focused action.
The aspects to the apex planet are like "cousins" to the square aspect family (conjunction, opposition, square), and therefore this configuration is conflict-oriented and stressful, but also dynamic and motivating.