Mathematics, 09.09.2021 04:00 kayleetweedy1
Cho tam giác ABC vuông tại A,đường cao AH. E và F là chân đường vuông góc kẻ từ H tới AB và AC
a)tính HA, HB và HC và diện tích tứ giác BEFC biết AB=3m, AC=4cm
b)M và N là trung điểm của HB và HC. tính diện tứ giác EFMN
Answers: 3
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Cho tam giác ABC vuông tại A,đường cao AH. E và F là chân đường vuông góc kẻ từ H tới AB và AC
a)t...
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