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एक समन बहुभुज का अतः कोण उसके बाह्य कोंडो से `108^(@)` अधिक हे। बहुभुज की भुजाये की संख्या कितनी हे?
A. 10
B. 14
C. 12
D. 16

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Correct Answer - A
मन अन्तः कोड =x
External angle =y
x-y=108…………..(i)
x+y=180…………….(ii)
From eqs (i) and (ii) x=144
`((n-2) xx 180)/n = 144`
n=10
Thus, number of sidesof polygon is 10.

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