Предмет: Геометрия, автор: Ка2388091

ABCD – прямоугольник.
∠ABD=60º. О - точка пересечения
АС и BD
Найдите ∠DОC

помогите .пожалуйста

Ответы

Автор ответа: Nastaska06
0

Решение:

1) т.к. угол АВD и угол CDB накрест лежащие, значит угол CDB = 60 градусов

2) т.к. ABCD прямоугольник, значит OCD = ODC = 60 градусов

3) угол DOC=180-(60+60)=60

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