Question

Find the sum of interior angles of a polygon with : (i) 9 sides (ii) 13 sides

Answer 1

Thanks for your question!! ✌
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Sum of interior angle of polygon = (n - 2 ) 180°

Now,

i)) 9

solution=)) ( 9 - 2) 180°
= 7× 180°
= 1260°

ii)) 13

solution =)) ( 13 - 2 ) 180°
=) 11 × 180 °
=) 1980°


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THANKS

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Answer 2

if we are given no. of side we can find the sum of interior angles

formula for it is

$(n - 2) \times 180 \\ \\ where \: n \: is \: no. \: of \: sides$
➡️ 9 sides

(9-2)180

=> 1260°


➡️ 13 sides

(13-2) 180

=>1980°

hope you get it ✔

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