add-solid.svg

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20"><path d="M11 9V5H9v4H5v2h4v4h2v-4h4V9h-4zm-1 11a10 10 0 1 1 0-20 10 10 0 0 1 0 20z"/></svg>