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28-12-2016
Mathematics

Answered

How many sides does a polygon have if the sum of its interior angles is 1,260º?

A7
B8
C9
D10

Verified Answer :

Nirina7 Nirina7

05-01-2017

the sum of interior angle is = 180(n-2) where n denotes the number of sides
so 1260° =180(n-2), n -2= 1,280/180=7, so n=7+2=9
the answer is C. 9

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