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Автор - elena4267

в треугольнике ABC угол а равен 40,ас=вс найти угол с

Ответ

Автор - VikaGradskaya

Ответ: 100°


Пошаговое объяснение: если АВ=ВС, то АВС - равнобедр. => уг.А=уг.В=40°

уг.С=180-40-40=100° (по теореме о сумме углов треугольника)


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