SOLUTION: The interior angle of a polygon is 100°. The other interior angles are all equal to 110°.how many sides has the polygon?

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Question 1078339: The interior angle of a polygon is 100°. The other interior angles are all equal to 110°.how many sides has the polygon?
Answer by Alan3354(69443) About Me  (Show Source):
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The interior angle of a polygon is 100°. The other interior angles are all equal to 110°.how many sides has the polygon?
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1 Ext angle = 80
All other Ext angles = 70
Sum of Ext angles = 360
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80 + n*70 = 360
n = 4
--> 5 sides