modeling-app/docs/kcl/getOppositeEdge.md

---
title: "getOppositeEdge"
excerpt: "Get the opposite edge to the edge given."
layout: manual
---

Get the opposite edge to the edge given.



```js
getOppositeEdge(tag: TagIdentifier) -> Uuid
```


### Arguments

| Name | Type | Description | Required |
|----------|------|-------------|----------|
| `tag` | [`TagIdentifier`](/docs/kcl/types#tag-identifier) |  | Yes |

### Returns

`Uuid` 


### Examples

```js
const exampleSketch = startSketchOn('XZ')
  |> startProfileAt([0, 0], %)
  |> line([10, 0], %)
  |> angledLine({ angle: 60, length: 10 }, %)
  |> angledLine({ angle: 120, length: 10 }, %)
  |> line([-10, 0], %)
  |> angledLine({ angle: 240, length: 10 }, %, $referenceEdge)
  |> close(%)

const example = extrude(5, exampleSketch)
  |> fillet({
       radius: 3,
       tags: [getOppositeEdge(referenceEdge)]
     }, %)
```

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