# Sandbox.PolygonMesh.AddVertices

```csharp
VertexHandle[] AddVertices(Vector3[] positions)
```

Add multiple vertices to the topology

### Parameters

- `positions` (`Vector3[]`)

### Returns

`VertexHandle[]`

Declared in [Sandbox.PolygonMesh](/api/Sandbox.PolygonMesh).
Assembly: `Sandbox.Engine`.