Предмет: Геометрия, автор: Vlvvor

Сколько сторон имеет правильный многоугольник, кут которого равняется 150 градусам?
А) 12.
Б) 9.
В) 10.
Г) 6.

Ответы

Автор ответа: wika28062000
0
Будем рассчитывать по формуле:
(180*(n-2))/n
-------------------
(180*(n-2))/n=150
(180n-360)/n=150
180n-360=150n
180n-150n=360
30n=360
n=12
Автор ответа: Vlvvor
0
спасибо. спасли мне жизнь
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