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2017-2018年浙江省宁波市江北区八年级第一学期期末数学试卷带答?- 百度文库

Դû ʱ䣺2025/5/28 23:52:53 loading ƪĵֻ
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2510֣ͼ֪ABC=90㣬ABEǵȱΣPΪBCһ㣨PBغϣAP߶APƵAʱת60õ߶AQQEӳBCڵF

1ͼBP=BAʱEBF= 㣬QFC= 㣻

2ͼPΪBCһʱQFCĶ֤ 3֪߶AB=4ϵʽ

BP=xQBCľΪyyxĺ

5ҳ26ҳ

2017-2018ѧ㽭ʡнϣĩѧ

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ο

һѡ⣨ÿС3֣10С⣬30֣

13֣ƽֱϵУP23ڣ Aһ

Bڶ C D

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Bx Cx Dx

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33֣ͼжԳǣ

A

B

C

D

𡿽⣺A4Գᣬ B6Գᣬ C4Գᣬ

6ҳ26ҳ

D2Գᣮ

ԣԳ6 ѡB

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УԱxȡֵΧǣ Bx0

Cx2x0 Dx٩2

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53֣ͼڡABCУA=35㣬C=45㣬ABCڵǵĶǣ

A35

B45 C80 D100

𡿽⣺ABCڵǡABD=A+C=35+45=80㣮 ѡC

63֣ͼʾڡABCУAB=ACDEֱACABе㣬BDCEཻO㣬

ijһλͬѧͼκó½ۣ١BCDաCBE ڡBDAաCEA ۡBOEաCOD ܡBADաBCDݡACEաBCEһȷǣ

7ҳ26ҳ

A٢ڢ

Bڢۢ C٢ۢ D٢ۢ

𡿽⣺AB=ACABC=ACB BDƽ֡ABCCEƽ֡ACB ABD=CBD=ACE=BCE ١BCDաCBE ASA ڡBDAաCEA ASA ۡBOEաCOD AASASA ѡA

73֣иУΪֱ߳ǣ A1.523

B51213 C72425 D81517

𡿽⣺A1.52+2232Ϲɶ涨ȷ B52+122=132Ϲɶ涨ʴ C72+242=252Ϲɶ涨ʴ D152+82=172Ϲɶ涨ʴ ѡA

83֣֪ߵijֱΪ49εܳΪ A13

B17 C22 D1722

𡿽⣺4Ϊʱ߶Ϊ9 994ԹΣ εܳΪ22

8ҳ26ҳ

2017-2018年浙江省宁波市江北区八年级第一学期期末数学试卷带答?- 百度文库.doc ĵWordĵصԣ㸴ơ༭ղغʹӡ
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