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chuunibyou
1 năm trước
Cho hình bình hành ABCD có AB : x + 3y − 6 = 0 và AD : 2x − 5y − 1 = 0. Giao điểm hai đường chéo AC và BD là I(3; 5). a) Tìm tọa độ điểm A, C. b)Viết phương trình hai cạnh còn lại của hình bình hành. vote 5*
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