Here is how I created the shape:

```
// Define the vertices of the plane
const vertices = new Float32Array([
-5.5, 5.5, 0, // Vertex 0
5.5, 5.5, 0, // Vertex 1
5.5, 45.5, 20, // Vertex 2
-5.5, 45.5, 20 // Vertex 3
]);
// Define the indices to form two triangles
const indices = new Uint16Array([
0, 1, 2, // Triangle 1
0, 2, 3 // Triangle 2
]);
// Create a BufferGeometry
const geometry = new THREE.BufferGeometry();
```

If I try to extrude using “THREE.ExtrudeBufferGeometry()” it seems not to be working and I get the following error:

Property ‘ExtrudeBufferGeometry’ may not exist on type ‘typeof import(“C:/Users/HP/AppData/Local/Microsoft/TypeScript/5.2/node_modules/@types/three/index”)’. Did you mean ‘ExtrudeGeometry’?