title: How to draw a filled arc in matplotlib
body: <p>In matplotlib, I would like draw an filled arc which looks like this:</p>
  
  <p><img src="https://i.stack.imgur.com/bRQy4.png" alt="Filled Arc Example"></p>
  
  <p>The following code results in an unfilled line arc:</p>
  
  <pre><code>import matplotlib.patches as mpatches
  import matplotlib.pyplot as plt
  
  fg, ax = plt.subplots(1, 1)
  
  pac = mpatches.Arc([0, -2.5], 5, 5, angle=0, theta1=45, theta2=135)
  ax.add_patch(pac)
  
  ax.axis([-2, 2, -2, 2])
  ax.set_aspect("equal")
  fg.canvas.draw()
  </code></pre>
  
  <p>The <a href="http://matplotlib.org/api/patches_api.html?highlight=arc#matplotlib.patches.Arc" rel="noreferrer">documentation</a> says that filled arcs are not possible.
  What would be the best way to draw one?</p>