Предмет: Геометрия, автор: alalmj7777

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Автор ответа: Tina1701
1

Ответ:

Объяснение:

ΔAMF - равнобедренный с основанием AF.

Точка С - середина AF, значит МС - медиана ΔAMF. По свойству медианы она так же является высотой, а значит ∠ВСМ = 90°, что и требовалось доказать.

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