Предмет: Геометрия, автор: Ananasik290

решите плиз срочно очень

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Автор ответа: sulu2301
1

Объяснение:

Если Р - это периметр тр-ка DFE , то ... DF + DM - это 1/2Р (полупериметр тр-ка DFE) Из DF + DM + FM = 28 => 28 - FM = 18 FM = 10

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