Question

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Answer 1

☺️

Formula for the sum of interior and angles of a polygon = $\textbf{(n-2)180°}$

For an octagon(a polygon with eight sides)

Using the above formula,

we get,

(8-2)180° = 6×180° = 1080°

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Answer 2

❤❤Here is your answer ✌ ✌

$\huge\underline {\red {\bold {Answer}}}$

➡Formula for the sum of interior and angles of a polygon => (n-2)180°

For an octagon{a polygon with eight sides}

Using the above formula, 

now we get

(8-2)180° = 6×180° = 1080°