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Автор - unicorn2911

геометрия 7 класс! Угол СВА=136°, найти угол СВД И ДВА если СВД=3-ём углам ДБА​

Ответ

Автор - kholyavskij

Ответ:

СВА=CBD+3DBA

3DBA=CBD

3DBA+DBA=136 градусов

4DBA=136 градусов

DBA=34 градуса

DBA*3=CBD=102 градуса

ДВА= 34

СБД=102

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