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duongthimylinha1k45
2 năm trước
Cho hình chữ nhật ABCD ( AB < BC ). Gọi M là điểm trên cạnh BC sao cho CM = CD. Từ M kẻ đường thẳng song song với CD cắt AD tại N; trên tia đối của tia MN ta lấy điểm E sao cho ME = MB. Chứng minh AC  DE. Giúp mình với!!( vẽ thêm hình nha) mình cảm ơn
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