學年廣東省中山八年級第一期期中數試卷注意事項：1答題，考生務必試題卷、題卡規定置填寫本人準考證號、姓名等信息．考生要認真核答題卡上貼的條形的“準考證號、姓名”與考生本人考證號、姓名是否一．2選擇每小題選出案后，用2B鉛筆把答題卡上對應題目的答案標號涂黑，如改動，用橡皮干凈后，選涂其他案標號．非選擇題答案用毫黑色墨水簽字筆在答題卡相應位置寫作答，試題卷上答題無效．3作圖先使用2B鉛筆畫出，確定后必須用0.5毫米黑墨水簽字筆黑．一單選題共10題.A

B

C

D49cmA13BCDABCABCABCA

B

C

D13cm3A7B3C7cm38cmA72

B60

C58

D50ABCABDACcmAEDE

A2B3C4cmDABCABCADAD3BCA6B9CDABCDEFAABDECFBDEBCCDEACDFBEDABDEACDFEABCDEACBCD18ABDA121518D102012PB3AA2cmAPQPQA2.5

B3

C3.5

D二填題共7小，每題分滿28分11y12

13A10040ACAB14OACDEAOD154216eq\o\ac(△,，)ABCBCADDBBACADC

17ADDEBFACEDFABF2BF①DEDF③④ACBF三解題一（3個小，小分滿分1819DABCDFFEAD

11111120BAC70C1ABCBD2四解題二（3個小，小分滿分21B4C41ABCeq\o\ac(△,A)eq\o\ac(△,)CABC2yPAPB2290ADBACDDEDEADBCDDB23ABCACBACFDDF1CEF

2五解題三（2個小，小分，分20分24112ANAOM32ANMCBMCEF25ABACDDCADDEE12

參考答案一單選題共10題每題3分滿分A

B

C

DABCD49cmA13BCD94cm9+4cm5cmcmBABCABCABCA

B

C

DABC+BCA+B180ABCBC+B+290

13cm3A7B3C7cm38cm373+33cm5cmcmA72

B60

C58

D50acDABCABDACcmAEDEA2B3C4cmDDEEC+ACBABCDEABDEEC

+ECABCABCADAD3BCA6B9CDB30BAD90C30CDADcmeq\o\ac(△,Rt)ABDBD2BCBCADBD6cm+ADBADB60ADB+6030DCADBDDC6+39ABCDEFAABDECFBDEBCCDEACDFBEDABDEACDFEECFDEABCBACDFBCABSSS

C，ACDFBEeq\o\ac(△,)ABCDE90ABACDFHLeq\o\ac(△,Rt)eq\o\ac(△,)ABCRtDEFCABCDEACBCD18ABDA121518DDADC3DAAC18+1812ABBD+DC+BC12102012PB3AA2cmAPQPQA2.5

B3

C3.5

DxcmAP3xcmAPQPQ

AQ203xAB12B3cmAQA2C3x2x203xx4D二填題共7小，每題分滿28分11y32y3212n180144n1013A10040ACAB5ABC10040C1004040C5

14OACDEAODOCAADOBCOAODBOCOASASASAAASAODOAOBODOCBOCADOAASODOCADOBCOODOCABADOBCO154212+DEC1+90

9016DBCDBBAC10252ACADDB102BADADCADDBBBADBBADBAC102

+DDEBFACEDFABF2BF①DEDF③④ACBF①②③④

DBC②DEDFCE①CBCABCCBFCABCBDADBC②③DEDFBF①2BF④①③④三解題一（3個小，小分滿分18n2n23606

19DABCDFFEADAECFADECFEABAADEFCFEADECFEAASAD

20BAC70C1ABCBD2BACABD

ABC251BD270C60ABCC50

ABC25

1111111111111BAC+7095四解題二（3個小，小分滿分21B4C41ABCeq\o\ac(△,A)eq\o\ac(△,)CABC2yPAPB2AB1eq\o\ac(△,A)eq\o\ac(△,)B32P2290ADBACDDEDEADBCDDB

AEDBEDBADB30DBCDDBDEAEDBED90ADEBDEDEDEAEDBEDADBDDAEBADCADBADCADBADBDBAD+BBBAD30CDADBDCD．23ABCACBACFDDF1CEF21ACB90F

FCEACF45CEF2ADF+CFE+DFC90DFE1ACBABFABACFFCBFCE45AFADFCEFCEFSAS2DFE1ADFCEFDFFEDFECFEAFD+DFC+DFCAFCAFC9090DFE五解題三（2個小，小分，分20分24112ANAOM32ANMCBMCEF

MCBSASBMMBCCAN+CANBCN3CF1BMCBNCNCBACM60+MCNBCMACNMCBMCBBM2MCBMBCMBC+BCN3CEFMCBCAECMFMCF180ACEMCFMCF

ACEMCFASAMCFCEF25ABACDDCADDEE12