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  • 誰(shuí)能幫忙翻譯一下 Germany Team Selection Tests 2006

    誰(shuí)能幫忙翻譯一下 Germany Team Selection Tests 2006
    誰(shuí)能幫忙翻譯一下
    Let A1, B1, C1 be the feet of the altitudes of an acute-angled triangle ABC issuing from the
    vertices A, B, C, respectively. Let K and M be points on the segments A1C1 and B1C1,
    respectively, such that∠KAM = ∠A1AC. Prove that the line AK is the angle bisector of
    the angle C1KM.
    數(shù)學(xué)人氣:587 ℃時(shí)間:2020-06-20 19:15:30
    優(yōu)質(zhì)解答
    從銳角三角形ABC的頂點(diǎn)向各自對(duì)邊作垂線,垂足分別為A1、B1、C1.在線段A1C1和B1C1上分別取K和M兩點(diǎn),令∠KAM = ∠A1AC.求證:直線AK是∠C1KM的角平分線.
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