title: why does turtle.circle(r,extent=720,steps=5) in python draws a star?
body: <p>Today, I accidentally tested this code:</p>
  
  <pre><code>import turtle
  
  turtle.circle(70,extent=720,steps=5)
  </code></pre>
  
  <p>and turtle drew this for me: <a href="https://i.stack.imgur.com/PnNSa.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/PnNSa.png" alt="img"></a></p>
  
  <p>Does anyone know why this happens?</p>