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Các bạn lm giúp mk bài 2 này vs ạ Bài2: Cho tam giác ABC có góc A bằng 50 độ, cạnh AB = 4cm, AC =7cm. Trên tia AC lấy điểm D sao cho AD = 2cm. Trên tia CA lấy điểm E sao cho CE = 3cm. a) Vì sao điểm E nằm giữa 2 điểm C và D? b) kẻ tia BD, BE. Trong 3 tia BD, BC, BE tia nào nằm giữa 2 tia còn lại vì sao? c) Tính độ dài DE d) D là trung điểm của đoạn thẳng nào vì sao? e) Đoạn thẳng BD là cạnh của tam giác nào? Vẽ hình giúp mk vs nha Lm giúp mk vs ạ Mk cần gấp Mơn các bạn trc
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