MATH TERMS
'(<a href="http://www.j-archive.com/media/2010-12-10_DJ_20.jpg" target="_blank">Kelly of the Clue Crew shows a diagram on a monitor</a>) A <a href="http://www.j-archive.com/media/2010-12-10_DJ_20a.jpg" target="_blank">circle</a> has 2 foci that coincide in a single point.  If we separate the foci, we can draw <a href="http://www.j-archive.com/media/2010-12-10_DJ_20b.jpg" target="_blank">this</a> 7-letter conic section'
an ellipse