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FMTMATH
2 năm trước
Cho tâm giác ABC vuông tại A đường trung tuyến AM gọi D là trung điểm AB,E là điểm đối xứng của M qua D : a, CMR E và M đx với nhau qua AB b, Các tứ giác AEMC , AEBM là hình gì? vì sao? c, Cho BC = 4cm Tính chu vi tứ giác AEBM
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