Cho tâm giác ABC vuông tại A, trung tuyến AM. Gọi D,E theo thứ tự là các chân đường Vuông góc kẻ từ M đén AB,AC
a)Chứng minh rằng tứ giác ADME là hcn
b) Gọi F là điểm đối xứng với M qua E. Chứng minh tứ giác AMCF lag hbh
c) Gọi I là trung điểm của MC. Chứng minh DI//EK

Question

05-11-2022
Mathematics

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Cho tâm giác ABC vuông tại A, trung tuyến AM. Gọi D,E theo thứ tự là các chân đường Vuông góc kẻ từ M đén AB,AC
a)Chứng minh rằng tứ giác ADME là hcn
b) Gọi F là điểm đối xứng với M qua E. Chứng minh tứ giác AMCF lag hbh
c) Gọi I là trung điểm của MC. Chứng minh DI//EK

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