# Normal

> Get/set the normal vector of the plane.

## Definition

* **Type:** Property
* **Namespace:** [Unity.Mathematics.Geometry](/engine/6000.5/script-reference/unity/mathematics/geometry.md)
* **Assembly:** UnityEngine.MathematicsModule

```csharp
public float3 Normal { get; set; }
```

### Remarks

It is assumed that the normal is unit length.  If you set a new plane such that Ax + By + Cz + Dw = 0 but (A, B, C) is not unit length, then you must normalize the plane by calling [Plane.Normalize](/engine/6000.5/script-reference/unity/mathematics/geometry/plane/normalize.md).