<?xml version="1.0"?>
<svg width="120" height="120"  viewBox="0 0 120 120"
     xmlns="https://www.w3.org/2000/svg" version="1.1"
     xmlns:xlink="https://www.w3.org/1999/xlink" >

    <polygon points="60,30 90,90 30,90">
        <animateTransform attributeName="transform"
                          attributeType="XML"
                          type="rotate"
                          from="0 60 70"
                          to="360 60 70"
                          dur="10s"
                          repeatCount="indefinite"/>
    </polygon>
</svg>