Question 822224
<pre>
{{{drawing(375,400,-10,5,-10,6,
line(2,2,-3,5),
line(2,2,-8,3),
line(2,2,-9,0),
line(2,2,-9,-4),
line(2,2,-8,-7),
line(2,2,-5,-6),
line(2,2,-3,-7),
line(2,2,0,-8),
line(2,2,1,-6),
line(2,2,3,-5),
line(2,2,4,-1),
line(2,2,-2,-9),

line(-3,5,-8,3),
line(-8,3,-9,0),
line(-9,0,-9,-4),
line(-9,-4,-8,-7),
line(-8,-7,-5,-6),
line(-5,-6,-3,-7),
line(-3,-7,-2,-9),
line(-2,-9,0,-8),
line(0,-8,1,-6),
line(1,-6,3,-5),
line(3,-5,4,-1),
line(4,-1,2,2)  )}}}

Answer: The polygon has 13 sides, because 2 of the 13 line 
segments from that vertex are not diagonals, but sides of 
the polygon, so there are 11 diagonals drawn from that point,
creating 11 triangles.

Edwin</pre>