Предмет: Геометрия, автор: LoveКотеек

В равнобедренном треугольнике АВС медианы пересекаются в точке О. Найдите расстояние от точки
О до вершины В данного треугольника, если АВ=
ВС=10см,АС=10см.

В прямоугольном треугольнике АВС (<С=90̊) проведена высота СD так, что длина отрезка ВD на 4 см больше
длины отрезка СD, АD=9см. Найдите стороны треугольника АВС. В каком отношении СD делит площадь треугольника АВС?

Ответы

Автор ответа: dongliliang0415
0

Ответ:

AD=DB=9

CD+4=DB

CD=5

AB=18

S=45

DB•CD•1/2=22.5

Поэтому CDделит триугодник в отнашение 1/2

Объяснение:

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