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Cho tam giác ABC vuông tại A , đường cao AH . Gọi D và E lần lượt đối xứng với H qua các cạnh AB và AC a) C/m D, A , E thẳng hàng b) C/m BCED là hình thang c) C/m 0 90 DHE 
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Cho tam giác ABC vuông tại A , đường cao AH . Gọi D và E lần lượt đối

xứng với H qua các cạnh AB và AC
a) C/m D, A , E thẳng hàng
b) C/m BCED là hình thang
c) C/m 0 90 DHE 

User Opi
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1 Answer

7 votes

Answer:

Sorry i don't speak Vietnam so i can't help you if you write it in English i will have a chance to help you

User Thomasgalliker
by
8.8k points
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