Step-by-step explanation:
Finding a regular polygon with <em>x </em>amount of sides, you use the equation 
to find the amount of triangles. Replace <em>x </em>with 15 and you will get 13. Each triangle has angles that add to 
, so you would do 180 * 13 to find the total of all of the interior angles, = 2340. Then, divide 2340 by 15, and you will get 156!
Answer:
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16" click brainliest and thanks<3
The length of segment of EF would be 16
