---
title: m21
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/affinetransform/m21
---

# m21

An element of the transform matrix that contributes scaling, rotation, and shear.

## Declaration

```swift
var m21: CGFloat
```

## See Also

### Accessing the Transformation Matrix

- [m11](foundation/affinetransform/m11.md)
- [m12](foundation/affinetransform/m12.md)
- [m22](foundation/affinetransform/m22.md)
- [tX](foundation/affinetransform/tx.md)
- [tY](foundation/affinetransform/ty.md)