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Bentagoon

Ka Wikipedia

Bentagoonku waa shaxdhow aad u dhow, waxaana uu ku salaysan yahay shan noocood oo qodob, oo dhammaantood ku jira seddex. Haddii dhinacyada dhammaan ay leeyihiin sama dhow oo ku nool 108°, bentagoonku waa loo yiqiin "midab-ka-dhexeeya". Haddii bentagoonku wuxuu la dhoobiyaa hal-abuuris, waxaana lagu yiqiin "bentagaram".

Bentagoonka

A = (5/4) × s² × (1 / tan(π/5))

W = 5 × s