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phdat2002
2 năm trước
giải bài Cho góc nhọn xOy .Trên tia Ox lấy điểm A ,trên tia Oy lấy điểm B sao cho OA=OB .Từ A kẻ đường thẳng vuông góc với Ox cắt Oy ở F.Từ B kẻ đường thẳng vuông góc với Oy cắt Ox ở E.AF và BE cắt nhau tại K .Chứng minh : a.AF=BE b. ΔAEK= ΔBFK c.OK ⊥ EF Giai giúp mình với mình đang cần gấp,vẽ hình nữa nha (Ai tl nhanh nhất mình vote cho 5 sao ạ)
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