Mathematics, 25.07.2021 06:00 gilliandooley1002
Cho tam giác ABC .Trên tia đối của tia BC lấy điểm D sao cho BD=AB. Trên tia đối của CB lấy điểm E sao cho CE=AC . Gọi H là chân đường vuông góc kẻ từ B đếb AD, K là chân đường vuông góc kẻ từ C đến AE
a) CMR: HK// DE
b) tính HK , biết chu vi tam giác ABC bằng 10 cm
Answers: 3
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Cho tam giác ABC .Trên tia đối của tia BC lấy điểm D sao cho BD=AB. Trên tia đối của CB lấy điểm E s...
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