# AngleUnitSystem enum

Namespace: [Rhino](https://developer.rhino3d.com/api/rhinocommon/namespace/rhino.md) · Assembly: [RhinoCommon](https://developer.rhino3d.com/api/rhinocommon/assembly/rhinocommon.md)

```cs
public enum AngleUnitSystem
```

ON::AngleUnitSystem identifies an angle unit system

## Values

| Name | Value | Description |
| --- | --- | --- |
| None | 0 | ON::AngleUnitSystem::None indicates no angle unit system is specified and model angle unit system should be used. |
| Turns | 1 | 1 turn = 2pi radians. |
| Radians | 2 | 1 turn = 2pi radians. |
| Degrees | 3 | 360 arc degrees = 1 turn = 2pi radians |
| Minutes | 4 | 60 arc minutes = 1 arc degree |
| Seconds | 5 | 60 arc seconds = 1 arc minute |
| Gradians | 6 | 400 gradians = 2pi radians. |
| Unset | 255 | The ON::AngleUnitSystem::Unset is used to indicates no angle unit system has been specified in user interface code. |