SOLUTION: The exterior angle of a regular polygon is 100 degrees less than the interior angle. What is the number of sides of the polygon?

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Question 379552: The exterior angle of a regular polygon is 100 degrees less than the interior angle. What is the number of sides of the polygon?
Answer by Alan3354(30993) About Me  (Show Source):
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The exterior angle of a regular polygon is 100 degrees less than the interior angle. What is the number of sides of the polygon?
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The interior and exterior add to 180, so the exterior = 40º.
360/40 = 9 sides