@activelylearn/material-ui/packages/material-ui-icons/src/UnfoldMore.js

Material-UI's workspace package

import React from 'react';
import createSvgIcon from './utils/createSvgIcon';

export default createSvgIcon(
  <g><path d="M12 5.83L15.17 9l1.41-1.41L12 3 7.41 7.59 8.83 9 12 5.83zm0 12.34L8.83 15l-1.41 1.41L12 21l4.59-4.59L15.17 15 12 18.17z" /></g>
, 'UnfoldMore');