Предмет: Геометрия, автор: army94109

Периметр трапеции равен 166см сумма длин непараллельных сторон равен 26 найдите среднюю линию этой трапеции

Ответы

Автор ответа: a87086828

Ответ:

Объяснение:

Средняя линия трапеции равна полусумме её оснований.

Пусть длины параллельных сторон трапеции равны a и b а длины непараллельных сторон равны c и d. Из условии известно что a+b+c+d=166 см и c+d=26 см.

Тогда a+b=166-26=140 см. Средняя линия трапеции равна a+b/2=140/2=70 см

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