Multiple Choice Questions on If the interior angle of a polygon is 108 then it is a ........ for RRB(NTPC) Exam Preparation

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Multiple Choice Questions

If the interior angle of a polygon is 108 then it is a ........

Quantitative Aptitude (RRB NTPC) Geometry
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    If the interior angle of a polygon is 108* , then it is a

    Octagon
     

    Incorrect Answer

    Hexagon
     

    Incorrect Answer

    Pentagon 

    Correct Answer

    Tetragon

    Incorrect Answer
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    Explanation:

    Let number of sides =n
    interior angle + exterior angle=180°
    exterior angle = 180°-108°
    = 72°
    Exterior angle =360/number of sides
    72°=360°/n
    N=5
    So, the polygon is a Pentagon.

    By: Barka Mirza
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