# useAdjacentStartPoint

> Set this to true to use the _adjacentStartPoint to form the collision normal that is used to calculate the collision response when a collision occurs at the Edge Collider's start point. Set this to false to not use the _adjacentStartPoint, and the collision normal becomes the direction of motion of the collision.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.7/script-reference/unityengine.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
public bool useAdjacentStartPoint { get; set; }
```

### Remarks

Additional Resources: [\_adjacentStartPoint](/engine/6000.7/script-reference/unityengine/edgecollider2d/adjacentstartpoint.md)