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锟斤拷锟斤拷省锟紹锟絋锟斤拷锟斤拷校2017-2018锟絎锟斤拷锟斤拷昙夛拷锟斤拷锟斤拷锟铰擄拷锟斤拷锟斤拷W試锟斤拷锟斤拷锟斤拷
25锟斤拷(锟斤拷锟絵锟組锟斤拷14锟斤拷)锟斤拷D6,锟揭傦拷锟窖岋拷锟角撅拷锟斤拷锟洁垂直锟斤拷锟斤拷邊锟轿斤拷锟斤拷锟斤拷锟斤拷锟斤拷邊锟斤拷
锟斤拷1锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷:锟斤拷D7,锟斤拷锟斤拷邊锟斤拷ABCD锟斤拷,AB=AD,CB=CD,锟斤拷邊锟斤拷ABCD锟角达拷锟斤拷锟斤拷邊锟轿嗭拷锟斤拷請锟絝锟斤拷锟斤拷锟斤拷.
锟斤拷2锟斤拷锟斤拷锟絴探锟斤拷:試探锟斤拷锟斤拷锟斤拷锟斤拷邊锟斤拷ABCD锟侥兩組锟斤拷邊AB,CD锟絚BC,AD之锟絞锟侥旓拷锟斤拷锟絇系.
锟斤拷锟斤拷Y論: (要锟斤拷锟斤拷锟斤拷锟斤拷锟絑锟皆旓拷锟斤拷).锟斤拷锟斤拷锟紺锟斤拷锟絕锟斤拷(锟饺拷锟斤拷锟紻锟斤拷,锟斤拷锟斤拷锟斤拷知锟斤拷锟斤拷锟紺,锟斤拷锟紺锟斤拷)
锟斤拷3锟斤拷锟斤拷锟絵锟斤拷Q:锟斤拷D8,锟街別锟斤拷Rt锟斤拷ACB锟斤拷直锟斤拷邊AC锟斤拷斜邊AB锟斤拷邊锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷ACFG锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷ABDE,锟紹锟斤拷CE,BG,GE,锟斤拷AC=4,AB=5,锟斤拷GE锟斤拷锟絃.
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