@angular2-material/progress-circle/progress-circle.html

Angular 2 Material progress-circle

<!--
  preserveAspectRatio of xMidYMid meet as the center of the viewport is the circle's
  center.  The center of the circle with remain at the center of the md-progress-circle
  element containing the SVG.
-->
<svg viewBox="0 0 100 100"
     preserveAspectRatio="xMidYMid meet">
  <path [attr.d]="currentPath"></path>
</svg>