title: Create cone geometry with rectangular base in three.js?
body: <p>I want to create the Cone Geometry with rectangular base in three.js. How could I do that?</p>
  
  <p>I'm providing the image here so that i can make some sense what I'm speaking.</p>
  
  <p><img src="https://i.stack.imgur.com/eLmWt.png" alt="enter image description here"></p>