Предмет: Геометрия, автор: Laura7770202

Угол ВАС треугольника АВС равен 60 градусов.Угол BCD является смежным с углом АСВ. Угол BCD=120 градусов. Докажите,что биссектриса угла BCD параллельна
стороне АВ треугольника АВС.

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Автор ответа: ЧерныйБрат

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