Mathematics, 06.09.2021 05:10, shanua

cho tam giác abc có AH vuông góc BC tại H và Ah^2= bh x bc k bx song song ac ,bx cắt ah tại d chứng minh tam giác abc vuông và ah x ad/ bh x bc = 1

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cho tam giác abc có AH vuông góc BC tại H và Ah^2= bh x bc k bx song song ac ,bx cắt ah tại d chứng...

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