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Nonagon |
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| $$\textbf{Area of the nonagon}$$ | ||||||
$$A = \frac{1}{4} · 9 · b^2 · \frac{\cos\big(\frac{\pi}{9}\big)}{\sin\big(\frac{\pi}{9}\big)} $$ | ||||||
| $$\textbf{Perimeter of the nonagon}$$ | ||||||
| $$P = 9 · b $$ | ||||||
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Nonagon |
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| $$\textbf{Area of the nonagon}$$ | ||||||
| $$A = \frac{1}{4} · 9 · b^2 · \frac{\cos\big(\frac{\pi}{9}\big)}{\sin\big(\frac{\pi}{9}\big)} $$ | ||||||
| $$\textbf{Perimeter of the nonagon}$$ | ||||||
| $$P = 9 · b $$ | ||||||