Предмет: Математика, автор: venera2501

прямые ab cd и ef пересекаются в точке О Угол DOF=60 градусов  Угол AOC=50 градусов 
.Найдите градусные меры углов BOC И BOF

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Ответы

Автор ответа: Suzanet
0


130 - 60 = 70 градусов - угол АОД.
Угол АОД = углу ВОС как вертикальные, значит угол ВОС = 70 градусов.

180 - (70+60) = 50 градусов - угол ВОF. Т.к. углы ВОС, ВОF и DOF - смежные.

Автор ответа: Marisa654
0
АОD=СОБ=130-60=70 Градусов ЕОС=DOF=60 Градусов(т.к вертикальные углы) BOF=180-60-70=50 Градусов
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