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8th Class Mathematics Practical Geometry Question Bank Geometry

  • question_answer
    The interior angle of a regular polygon exceeds the exterior angle by\[{{160}^{o}}\]. How many sides are there in the polygon?

    A) 15                  

    B) 16

    C) 18                  

    D) 20

    Correct Answer: C

    Solution :

    Let exterior angle of polygon be x. So interior angle \[{{60}^{o}}\] So  \[{{180}^{o}}\] \[{{360}^{o}}\] \[{{x}^{o}},x-{{10}^{o}},x+{{30}^{o}}\] No. of sides \[2{{x}^{o}}\]  


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