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hoangmai20052002
2 năm trước
Trên đoạn AC lấy C: CA>CB. Trên cùng nủa mp bờ AB vẽ tam giác đều ACD ; BCE .Gọi M,N,P,Q lần lượt là trung điểm của AE ;CD ;BD ;CE a, Xác định dạng của tứ giác MNPQ b, Cm MP = 1/2 DE Mọi người giúp em vs ạ . Em đang cần gấp , em cảm ơn !
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