Question

Find the measure of each interior angle of a regular polygon with 9 sides.

Answer 1

Dear student
$$\begin{gathered} \mathrm{The}\mathrm{formula}\mathrm{for}\mathrm{knowing}\mathrm{interior}\mathrm{angle}\mathrm{of}\mathrm{a}\mathrm{regular}\mathrm{polygon}\mathrm{is} \\ (\mathrm{n}-2)\times \frac{180}{\mathrm{n}}\mathrm{where}\mathrm{n}=\mathrm{no}.\mathrm{of}\mathrm{sides} \\ \mathrm{Heren}=9 \\ \mathrm{So},\mathrm{Interior}\mathrm{angle}=(9-2)\times \frac{180}{9}=140° \end{gathered}$$
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