A) 15
B) 18
C) 20
D) 30
Correct Answer: B
Solution :
Exterior angle \[={{180}^{o}}\]- Interior angle \[={{180}^{o}}-{{160}^{o}}={{20}^{o}}\] \[\therefore \]Number of sides \[=\frac{{{360}^{o}}}{Exterior\,\,angle}\] \[=\frac{360}{20}=18\]You need to login to perform this action.
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