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Основы трапеции = 9см и 4см. Диагональ делит трапецию на два подобных треугольника. Найдите длину диагоналей.
Ответы 1
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Решение:
В подобных треугольниках соответствующие стороны пропорциональны.
угол АСВ = углу CAD - как внутренние, накрест лежащие.
ВС:АС=АС:AD
AC² = BC*AD = 9*4 = 36
АС = √36 = 6 см
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Автор:
maddisonvaughn - 5 лет назад
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