Mathematics, 21.09.2021 03:50 savag3jitt
Cho tam giác ABC cân tại A, M là điểm bất kì ( M € AB ) lấy N thuộc tia đối CA ; CN=BM vẽ ME; NF lần lượt vuông góc với BC ; MN giao BC tại I
a) Chứng minh IE=IF
b) Lấy D thuộc AC ; CD=CN. Chứng minh BMDC là hình thang cân
Answers: 1
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Cho tam giác ABC cân tại A, M là điểm bất kì ( M € AB ) lấy N thuộc tia đối CA ; CN=BM vẽ ME; NF lần...
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