April 13th, 2017, 01:07 PM  #11 
Math Team Joined: Jul 2011 From: Texas Posts: 3,002 Thanks: 1587  
April 13th, 2017, 02:56 PM  #12 
Global Moderator Joined: Dec 2006 Posts: 20,927 Thanks: 2205 
The wrong diagram was presented. For all three diagrams, just use rotation.

April 13th, 2017, 03:21 PM  #13 
Senior Member Joined: Apr 2017 From: New York Posts: 155 Thanks: 6 
Sorry I put wrong picture.

April 13th, 2017, 08:36 PM  #14 
Senior Member Joined: Apr 2017 From: New York Posts: 155 Thanks: 6 
here is the correct picture:

April 13th, 2017, 11:53 PM  #15 
Global Moderator Joined: Dec 2006 Posts: 20,927 Thanks: 2205 
It's unclear which line's length is given by the black 5.


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chords, lines, tangent 
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