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Автор - Aikerim2319

∆АВС ∆А1В1С1 – треугольники,∠А=∠С=∠А1=72°. Найдите ∠В1

Ответ

Автор - mudryy4

подобны следовательно  угол б= 180-72-72=36, тюк они подобны угол б1= 36 гр

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