A regular polygon of (2k+1) sides has 140 as the size of each interior angle.Find k


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Question Number 58567 by olalekan2 last updated on 25/Apr/19

$A r e g u l a r p o l y g o n o f (2 k + 1) s i d e s$ $h a s 140 a s t h e s i z e o f e a c h i n t e r i o r$ $a n g l e . F i n d k$
Commented by mr W last updated on 25/Apr/19

$(2 k + 1) (180 - 140) = 360$ $2 k + 1 = 9$ $k = 4$
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