Предмет: Геометрия, автор: 542327868

в прямоугольнике abcd ac=18 ab=17o точка пересечения диагоналей.найти периметр треугольника cod

помогите срочно

 

Ответы

Автор ответа: EpicArctic
0

Как известно в прямоугольнике противоположные стороны равны АВ = СД =17см

Диогонали прямоугольника равны и  делятся точкой пересечения пополам. значит АС = ВД = 18 см

ДО = ОС =18/2=9 см

 Периметр  СОД= СО+ОД+ДС=9+9+17=35 см

 

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