Rotate transform in a clockwise direction

We rotate it in a clockwise direction by setting angle to a negative value between 0 and -360,the following code shows an example for it.
<image.rendertransform>
<transformgroup>
<scaletransform/>
<skewtransform/>
<rotatetransform angle=" -45">
<translatetransform/>
</transformgroup>
</Image.RenderTransform>
</image>