2015-2016锟絎锟斤拷锟斤拷锟教帮拷锟斤拷昙夛拷锟斤拷W锟斤拷锟叫檢锟統試锟斤拷锟斤拷锟斤拷
25.锟斤拷8锟街ｏ拷锟斤拷2015锟斤拷锟絍锟斤拷锟叫匡拷锟斤拷锟斤拷D12锟斤拷锟斤拷邊锟斤拷OMTN锟斤拷锟斤拷OM=ON,TM=TN,锟揭傦拷锟斤拷锟紷锟絅锟缴組锟斤拷邊锟街別锟斤拷鹊锟斤拷锟竭咃拷谓锟斤拷锟斤拷~锟斤拷.
(1)試探锟斤拷锟絶锟轿岋拷锟角撅拷之锟絞锟斤拷位锟斤拷锟絇系锟斤拷锟斤拷锟紺锟斤拷锟斤拷慕Y論.
(2)锟节箏锟斤拷ABCD锟斤拷锟斤拷锟斤拷知AB=AD=5锟斤拷BC=CD,BC锟斤拷AB,BD,AC锟介對锟角撅拷锟斤拷BD=8.
锟斤拷锟角凤拷锟斤拷锟揭伙拷锟斤拷A使锟斤拷A,B,C,D锟侥傦拷锟絚锟斤拷锟斤拷锟紷锟斤拷锟紸锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷A锟侥半徑锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷請锟絝锟斤拷锟斤拷锟斤拷.
锟斤拷锟絕锟絚B锟斤拷BF锟斤拷CD锟斤拷锟斤拷锟斤拷锟�F锟斤拷BF锟斤拷AC锟斤拷锟絚E锟斤拷锟紹锟斤拷DE.锟斤拷锟斤拷邊锟斤拷ABED锟斤拷锟斤拷锟轿時锟斤拷锟斤拷锟絚F锟斤拷AB锟侥撅拷锟絰.