!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!СРОЧНО!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Дан равнобедренный треугольник ABC, угол B равен 120°. Из вершины B проведена высота BH. Найдите BH, если...
AB = BC = 18
Ответы:
1. 18
2.9
3.12
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