# Union(PhysicsAABB)

> Create a union of the specified AABB and this AABB where resulting AABB completely encapsulates both AABB.

## Definition

* **Type:** Method
* **Namespace:** [Unity.U2D.Physics](/engine/6000.7/script-reference/unity/u2d/physics.md)
* **Assembly:** UnityEngine.PhysicsCore2DModule

```csharp
public readonly PhysicsAABB Union(PhysicsAABB aabb)
```

### Parameters

**** (\[PhysicsAABB]\(/engine/6000.7/script-reference/unity/u2d/physics/physicsaabb)): The AABB to create a union with.

### Returns

| Type                                                                            | Description               |
| ------------------------------------------------------------------------------- | ------------------------- |
| [PhysicsAABB](/engine/6000.7/script-reference/unity/u2d/physics/physicsaabb.md) | The results of the union. |