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Найдите неизвестное основание трапеции если средняя линия трапеции равна 27 см одно из оснований равно 18 см
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Предмет:
Геометрия -
Автор:
flakeyb21g - 6 лет назад
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Ответы 1
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АВСД- трапеция,ВС║АД,КМ-средняя линия =27см.Допустим ВС=хсм ,АД=18см ,средняя линия равна половине суммы двох оснований , слаживаем ирешаем уравнение :
(х+18):2=27
х:2+18:2=27
х:2=27-9=18
х=18:2=9
ВС=9см,
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Автор:
higginsweus - 6 лет назад
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0
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