Предмет: Геометрия, автор: timofejkovtunec

Один із зовнішніх кутів трикутника дорівнює 108 градусів. Знайдіть внутрішні кути,не сумвжні з ним,якщо вони відносяться 5:7.
ДАЮ 100 БАЛЛОВ КР С ГЕОМЕТРИИ СРОЧНО!!!

Ответы

Автор ответа: parus77
1

Ответ:

Объяснение:

внешний угол треугольника равен сумме внутренних углов не смежных с ним.

пусть первый угол -5Х

тогда второй угол - 7Х

т.к их сумма равна 108°

составим уравнение 5х+7х=108

12х=108

х=108:12

х=9

9*5=45 °   это первый угол

9*7=63°   это второй угол

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A had eaten B eated C eats

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A was watching B watched C is watching

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A was B is C has been

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