# Math constants

## Function

Math provides commonly used mathematical constants, which can be read in attribute form.

## Syntax

```bt
Math.PI
Math.E
Math.TAU
```

## Parameters

| Parameters | Type | Required | Default value | Description |
| ------ | ------ | ------ | ------ | ------ |
| None | - | No | None | Constant properties require no parameters. |

## Return value

| Type | Description |
| ------ | ------ |
| Int/Float | Returns the corresponding mathematical constant. |

## Constant list

| Constant | Description |
| ------ | ------ |
| Math.E | The natural constant e. |
| Math.LN2 | The natural logarithm of 2. |
| Math.LN10 | The natural logarithm of 10. |
| Math.LOG2E | The base 2 logarithm of e. |
| Math.LOG10E | Base 10 logarithm of e. |
| Math.PI | Pi. |
| Math.SQRT1_2 | The reciprocal of the square root of 2. |
| Math.SQRT2 | The square root of 2. |
| Math.TAU | 2 times pi. |

## Example

```bt

// Output: 3.141592653589793
print Math.PI

// Output: 2.718281828459045
print Math.E

// Output: 6.283185307179586
print Math.TAU
```

## Notes

- Math constants are read-only static properties and do not require calling math() to create objects.