Предмет: Геометрия, автор: kateplahotnyk

Знайти кількість сторін правильного многокутника, якщо його внутрішній кут 108 градусів

Ответы

Автор ответа: cvb115

Ответ:

Кожний кут правильного многокутника обчислюеться за формулою:

(180°(n-2))/n отже:

108=(180*(n-2))/n

108=(180n-360)/n

108n=180n-360

-72n=-360

n=5

Це п'ятикутник.

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