Mathematics, 22.08.2021 09:50 tinagibbs98
Cho tam giác ABC vẽ đường trung tuyến AM. Gọi I là tring điểm của AB và D là điểm đối xứng của M qua I
a) Tứ giác AMBD là hình gì vì sao ?
b)Chứng minh CM=AD
c)Tam giác ABC có điều kiện gì thì tứ giác AMBD là hình chữ nhật
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Cho tam giác ABC vẽ đường trung tuyến AM. Gọi I là tring điểm của AB và D là điểm đối xứng của M qua...
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