Предмет: Геометрия, автор: sukhachevaveronika20

помогите пожалуйста!!! Все три. Дам лучший ответ и побольше баллов! ​

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Ответы

Автор ответа: sid8743
1

Ответ:

б) у = 180° - (25° + 40°)

у = 115°

в) 4у + у = 180°

5у = 180°

у = 180° ÷ 5

у = 36°

г) 50 + у - 30 + у = 180°

20 + 2у = 180

10 + у = 90

у = 90 - 10

у = 80


sukhachevaveronika20: спасибо
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