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The angles of a 15-sided polygon are in arithmetic sequence. Which of those given below is an angle of this polygon ?(1) 128°(2) 130°(3) 132°(4) 156°Don’t answer if you don’t know |
Answer» (4) 156°explanation: the no of side of polygon = 15, that MEANS, n= 15. The interior angle of 15-sided polygon = {(n-2)×180°/n} ={(15-2)×180°/15} ={13×180°/15} =156° (ans) |
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