haianh68 haianh68
  • 26-01-2024
  • Mathematics
contestada

cho tam giác ABC cân tại A tia phân giác của góc A cắt BC tại H . Gọi K , M lần lượt là hình chiếu của H trên AB , AC . A , chứng minh tam giác KAH = tam giác MAH . b, chứng minh tam giác KMA cân và KM song song với BC

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