The triangles in grey covers the same area. An updated .svg version of the previous file, <a class="external free" href="https://commons.wikimedia.org/wiki/File:Keplero_legge_delle_aree.jpg">http://commons.wikimedia.org/wiki/File:Keplero_legge_delle_aree.jpg</a> - I tried to upload it by updating it directly, but apparently there is an issue with updating a file with a new one, the new file having a different extension. 
I more or less drew new lines above the previous authors old lines, with the exception of the sun and the planet, which where more or less just made by creating two circles of corresponding colours.
<a href="//commons.wikimedia.org/wiki/User:Maksim" title="User:Maksim">Maksim</a>,  <a href="//commons.wikimedia.org/wiki/User_talk:Zeyra" title="User talk:Zeyra">Zeyra</a>
2010-02-01
<span class="int-own-work" lang="en">Own work</span>