title: Draw cross inside circle using patches in matplotlib
body: <p>How can I draw an X inside the outer circle (top left) in the plot below using <code>Patches</code>? I do not want to plot a data point since the axes limits can change (I'm plotting this inside another figure), or when I tried using <code>text</code> the font looks strange. I have this</p>
  
  <pre><code>f = plt.figure(figsize=(6, 6))
  ax = f.add_subplot(111)
  
  box = ax.get_position()
  axColor = plt.axes([box.x0 + 0.05, box.y0 + 0.05,
                      0.6, 0.6], projection='polar')
  
  axColor.set_yticks([])
  axColor.set_xticks([])
  axColor.set_rlim(0, 50)
  
  circle = plt.Circle((0., 0.), 10, transform=axColor.transData._b,
                     edgecolor='k', facecolor='None', linewidth=2)
  axColor.add_artist(circle)
  circle = plt.Circle((0., 0.), 3, transform=axColor.transData._b, 
                     color='k', linewidth=2)
  axColor.add_artist(circle)
  
  circle = plt.Circle((-0.02, 0.9), 0.1, transform=axColor.transAxes,
                     edgecolor='k', facecolor='None', linewidth=2, clip_on=False)
  axColor.add_artist(circle)
  # Cannot draw an X
  </code></pre>
  
  <p>And the image is</p>
  
  <p><a href="https://i.stack.imgur.com/6DVuC.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6DVuC.png" alt="enter image description here"></a></p>