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В равнобедренном треугольнике ABC с основанием AB внешний угол при вершине C равен 116 градусов.Найдите градусную меру внешнего угла при вершине B.
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<C=180-116=64°Т.к. тоеугольник равнобедренный, то <A и <B=(180-64):2=58°Внешний угол при вершине В, это 180-58=122°Ответ:122°
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Автор:
parislogan - 6 лет назад
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