2023-2024学年辽宁省沈阳市于洪区八年级（下）期中数学试卷.pdf
文本预览下载声明
-JYECD
2
23-2024/\()
(10,3,30.,)(
67910,,)
1.(3),.,()
OYZ.
2.(3)zy,()
A,a-1y-1B,r+1y+1C-2z-2yzy0
3.(3)1f...{1ahsectkeREMa)
-201201201
____)
201
4(3)A4BCh,4,LB,LCa,8,c,A4BC()
A.LA:ZB:£0=3:4:5B,LA+LB=LCCa:5:c=3:4:5D,@+=?
5.(3),()
A,6a?b?=3abe2abB.a-b?+1=(a-b)(at+b)+1C.a(a+1)(a-1)=a3-aD.3a+3b=3(a+b)
6.(3):A4BC,4B=4C,:LB90°.()
A,ZLB290°B.LB90°Cc.ZB90°D,AB¥AC
7.(3),A4BCHh,ABMEAPNRHAB,BOFAD,B,4B,
4B=4EC=2,,BCNg()
-21
-JYECD
8.(3),A4BCBCADBP,C=5,C=3,A
()
BDiso]
9.(3),A4BCh,,84CA
Q,BOSIDAP.QHD,UAFSPQAKEHM,HIFAM,BM
ACFAE,BD|BC4BD,4B=5,4B=3,A4DB()
DE
B
BQC
A8,11Cc.10,13
10.(3),A4BCth,B4C=55,A4BCa(0?a55°),A
A4D,DEXACFF.a=40,DBC,4FB(
Dy2
Bic
A,80°B.85°C90°95
(5,3,15)(23,
显示全部