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Биссектрисы углов при основании равнобедреннго треугольника АВС пересекаются в точке О. Найти градусную меру угла В, если угол АОС равен 130 градусов.
(Биссектрисы называются АE и CD)
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Ответы 1
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В геометрии не сильна,но всё же.Углы равнобедр.треугольника при основании равны 45 гр.а угол В 90 гр.
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Автор:
giovannifreeman - 6 лет назад
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