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Автор - kate6977

Докажите что треугольник qpk = fpk.​

Ответ

Автор - BrainDan

Дано: ΔQPK, ΔFPK, ΔQMK, ΔFMP.

Доказать: ΔQPK = ΔFPK.

Доказательство: рассмотрим ΔQMK u ΔFMP. Они равны по 2 признаку (QM = MP, ∠KQM = ∠FPM, ∠QMK = ∠FMP ( как вертик.)) ⇒ QK = FP, KM = MF. Рассмотрим ΔQPK и ΔFPK. У них:

1) KP - общая,

2) QK = FP,

3) QM = MP, FM = MK.

⇒ ΔQPK = ΔFPK (по 3 признаку).

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