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# The sum of the internal angles of this shape is 1,620 degrees, with each internal angle measuring 147.27 degrees. What is this polygon?

Question #90368. Asked by BRY2K. (Dec 27 07 8:53 PM)

Jafato

Undecagon or Hendecagon

Using the formula provided in the reference:
Sum of the interior angles of a polygon = (N - 2) x 180°

1620° = (n-2) x 180°
(n-2)= 1620°/180°
n-2 = 9
n = 11

http://www.math.com/tables/geometry/polygons.htm

 Dec 27 07, 9:34 PM

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