<PRE><B>Question 1017079</B>
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How may sides does a polygon have if the sum of its interior angles is 1260°? What is this polygon?
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The sum of interior angles of an n-sided polygon is 180*(n-2).


So, n-2 = {{{1260/180}}} = 7.


Thus n=9. It is a 9-sided polygon.





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