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quanleo2111
2 năm trước
Mọi người ơi, mọi người ơi. Anh chị xinh trai đẹp gái nào vào đây giải giúp em bài này ạ: B1: Cho ΔABC vuông tại A có AB=6cm, BC=10cm. Vẽ AH vuông góc BC tại H trên tia đối của tia HA lấy điểm D sao cho HA=HD, trên tia HC lấy điểm E sao cho HB=HE a)Tính AC b)CM:Δ AHB= ΔDHE c)CM:DE ⊥AC d)Qua B kẻ đường thẳng sông song vs AE và cắt đường thẳng AC tại F. CM:D,B.F thẳng hàng B2:Cho Δ ABC vuông tại A a)Trên tia đối của tia AB lấy điểm E sao cho AE=AB. CM:tam giác ABC=AEC c)Từ A kẻ AH ⊥CE(K ∈CE). CM:AH=AK Bạn nào làm được mk vote 5 sao+câu trả lời hay nhất+cảm ơn
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