SOLUTION: if each interior angle of a regular polygon is 140 degree. find the interior angle of a regular polygon which has double the number of sides of the first polygon.

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Question 514950: if each interior angle of a regular polygon is 140 degree. find the interior angle of a regular polygon which has double the number of sides of the first polygon.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
if each interior angle of a regular polygon is 140 degree. find the interior angle of a regular polygon which has double the number of sides of the first polygon.
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I'll be brief:
Exterior angle corresponding to 140 is 40 degrees.
# of sides is 360/40 = 9
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If # of sides is 18 Size of exterior angle would be 360/18 = 20 degrees
Then the interior would be 180-20 = 160 degrees.
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Cheers,
Stan H.
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