Transformations can be applied to elements by adding a transform
attribute:
<circle cx="0" cy="0" r="50" transform="translate(50,50)"/>
Or to groups of elements enclosed in <g>
tags:
<g transform="translate(50,50)">
<circle cx="0" cy="0" r="50"/>
<circle cx="0" cy="0" r="25" fill="white"/>
</g>
More transformations can be applied to the same element by adding them separated by spaces:
<circle cx="0" cy="0" r="50" transform="translate(50,50) scale(.5)"/>