# Circle

> Use a circle shape to interpret the PhysicsShape2D geometry.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine](/engine/6000.6/script-reference/unityengine.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
Circle = 0
```

### Remarks

A circle geometry type is comprised of a single vertex in the [PhysicsShape2D](/engine/6000.6/script-reference/unityengine/physicsshape2d.md) and a [PhysicsShape2D.radius](/engine/6000.6/script-reference/unityengine/physicsshape2d/radius.md). The single vertex represents the center of the circle with the radius defining the radius of the circle.