Uhly pravidelného 18-uholníka
Aké veľké budú jednotlivé uhly daného pravidelného n-uholníka?
\( \normalsize n=18 \)
\( \large \alpha = \Large \frac{ \left( n-2 \right) \cdot 180\degree }{n}\large = \Large \frac{ \left( 18-2 \right) \cdot 180\degree }{18}\large = \Large \frac{16\cdot 180\degree }{18}\large = \Large \frac{2880\degree }{18}\large = 150\degree \)
\( \large \alpha = \Large \frac{ \left( n-2 \right) \cdot 180\degree }{n}\large = \Large \frac{ \left( 18-2 \right) \cdot 180\degree }{18}\large = \Large \frac{16\cdot 180\degree }{18}\large = \Large \frac{2880\degree }{18}\large = 170\degree \)
\( \large \alpha = \Large \frac{ \left( n-2 \right) \cdot 180\degree }{n}\large = \Large \frac{ \left( 18-2 \right) \cdot 180\degree }{18}\large = \Large \frac{16\cdot 180\degree }{18}\large = \Large \frac{2880\degree }{18}\large = 160\degree \)
\( \large \alpha = \Large \frac{ \left( n-2 \right) \cdot 180\degree }{n}\large = \Large \frac{ \left( 18-2 \right) \cdot 180\degree }{18}\large = \Large \frac{16\cdot 180\degree }{18}\large = \Large \frac{2880\degree }{18}\large = 155\degree \)