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- 1已知:△ABC,射线BE、CF分别平分∠ABC和∠ACB,且BE、CF相交于点O. (1)求证:∠BOC=90°+1/2∠A; (2)若将条件“CF平分∠ACB”改为“CF平分与∠ACB相邻的外角”,其它条件不变.试问(1)中
- 2You don`t need to w____about me.I can look after myself well.用worry的哪种形式?
- 3函数y=sin2x+cos2x的图象的对称轴是
- 4单选 (1) What's that?It's cap A,orange B,an orange C,a orange D,the orange
- 5I would like some bread.同义句
- 6I shall meet him _____ I first met you.A at which place B at the place whichC at the place where
- 7He is a sixteen-years-old boy
- 8直角三角形的小旗,一条直角边长15cm,另一条长24cm做150面这样的小旗,至少要多少m2
- 9求苏教版六年级数学上册评价手册期末测试答案
- 10分子式为C9H20,为烷烃.且一氯代物为两种,求此化合物的结构简式.