# isValid

> Whether the geometry describes a chain segment that can be used.

## Definition

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

```csharp
public readonly bool isValid { get; }
```

### Remarks

Both ghost vertices must be finite, and [\_segment](/engine/6000.7/script-reference/unity/u2d/physics/chainsegmentgeometry/segment.md) must itself be valid. See [\_isValid](/engine/6000.7/script-reference/unity/u2d/physics/segmentgeometry/isvalid.md).