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dlamanh123
2 năm trước
HELP ME PLS T-T Cho tam giác ABC vuông tại B, Kẻ AI là tia phân giác của góc BAC , IH ⊥ AC tại H a) Chứng minh △ ABI = △ AHI b) HI cắt AB tại K . Chứng tỏ rằng BK = HC c) CMR : BH // KC d) Qua C kẻ dường thẳng song song với HK, Cắt AI tại O . Tìm điều kiện của tam giác ABC để tam giác CIO đều Mik đang cần gấp nên gửi 2 lần T-T ( ai thấy mik tội thì giúp mik với nhé) (~^^~)
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