Предмет: Геометрия, автор: Laingraim

Помогите,пожалуйста!!!

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Автор ответа: chubotarualya

0

угол r и угол a - вертикальные , а значит они равны.
угол r = 143

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My school life.
I would like to tell you a few words about my school life. I go to school five days a week except Saturday and Sunday. Classes in our school start at 8:30 o'clock in the morning and last until 15:00 o’clock. We usually have 6 or 7 lessons a day. We study many different subjects: Russian, English, History, Geography, Biology, Physics, Chemistry and Maths.
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