Cho tam giác ABC vuông ở A, đường cao AH. Trên tia đối của tia HA lấy điểm D sao cho HD=HA. Đường thẳng qua E song song với AB cắt tia HC tại E a) Chứng minh HB=HE và tứ giác ABDE là hình thoi. b)Tam giác ABC cần có thêm điều kiện gì để tứ giác ABDE là hình vuông Ai đúng mik vote 5* và trả lời hay nhất nha

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