Предмет: Геометрия, автор: Whiteholdd

50 баллов! Помогите пожалуйста с решением!!!

Приложения:

Ответы

Автор ответа: Аноним

2

Решение:

Т.к. О - середина ВС, то ВО = 7 ÷ 2 = 3,5 (см)

ΔАВО = ΔDOC (По двум сторонам) значит ВА = DC = 5 (см)

угол ОСD = углу АВО = 50° (как накрест лежащие)

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