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> {(n-2)180°/[(n+2)-2]}=3/4
> 4(180n-360°)=540n
> 720n-1440°=540n
> 180n/180=1440°/180
> n=8
Therefore,sum of interior angles of the polygons with n sides is,
(8-2)180°=1080°.
Mr Masinde answered the question on April 26, 2018 at 14:36
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