# matrix()

The `matrix()` CSS function specifies a homogeneous 2D transformation matrix comprised of the specified six values. The constant values of such matrices are implied and not passed as parameters; the other parameters are described in the column-major order.

`matrix(a, b, c, d, tx, ty)` is a shorthand for `matrix3d(a, b, 0, 0, c, d, 0, 0, 0, 0, 1, 0, tx, ty, 0, 1)`.

Note: Until Firefox 16, Gecko accepted a `<length>` value for tx and ty.

## Syntax

```matrix(a, b, c, d, tx, ty)
```

## Values

a b c d
Are `<number>` describing the linear transformation.
tx ty
Are `<number>` describing the translation to apply.
Cartesian coordinates on ℝ2 Homogeneous coordinates on ℝℙ2 Cartesian coordinates on ℝ3 Homogeneous coordinates on ℝℙ3
$\left(\begin{array}{cc}a& c\\ b& d\end{array}\right)$ $\left(\begin{array}{ccc}a& c& tx\\ b& d& ty\\ 0& 0& 1\end{array}\right)$ $\left(\begin{array}{ccc}a& c& tx\\ b& d& ty\\ 0& 0& 1\end{array}\right)$ $\left(\begin{array}{cccc}a& c& 0& tx\\ b& d& 0& ty\\ 0& 0& 1& 0\\ 0& 0& 0& 1\end{array}\right)$
`[a b c d tx ty]`

TBD

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