INTERIOR ANGLES
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» Following the formula where (S) is the sum of interior angles of a polygon and (n) as the number of sides of a particular polygon.
[tex] \: : \implies \sf \large S=180 \degree(n - 2)[/tex]
» A nonagon is a polygon with nine sides, so substitute (n) as 9.
[tex]\implies \sf \large S=180 \degree(9 - 2)[/tex]
[tex]\implies \sf \large S=180 \degree(7)[/tex]
[tex]\implies \sf \large S=1260 \degree \\ \\ [/tex]
Final Answer:
[tex] \tt \huge » \: \purple{1260 \sf \degree}[/tex]
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