---
title: "TAU"
subtitle: "Constant in std::math"
excerpt: "The value of `tau`, the full circle constant (τ). Equal to 2π."
layout: manual
---

The value of `tau`, the full circle constant (τ). Equal to 2π.

```kcl
TAU: number = 6.28318530717958647692528676655900577_
```



### Examples

```kcl
exampleSketch = startSketchOn(XZ)
  |> startProfile(at = [0, 0])
  |> angledLine(
    angle = 50,
    length = 10 * TAU,
  )
  |> yLine(endAbsolute = 0)
  |> close()

example = extrude(exampleSketch, length = 5)
```

![Rendered example of TAU 0](data:image/png;base64,[encoded data, 83488 characters])


