2020-2021学年新疆吐鲁番市鄯善县、高昌区八年级（下）期末数学试卷(1).pdfVIP

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2020

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(3,30)(8,,)

1.(3)Vz3z()

A,z3,z3C.z3,z3

2.(3),()

A,V2B.V12a,D.Ve

3.(3)()

A,V24+V3=V5B,3V2-V/2=3C.V6+2=V3D,V(-4)x(2)=2V2

4.(3),4BCD()

A,4BICD,AD=BCB,LA=LC,LB=LDCABICD,4D|BC

D,AB=CD,AD=BC

5.(3)a5c,()

A,a=3,b=4,c=6.a=1,b=V2,c=V3Ca=5,B=6,c=8

,b=2,c=V5

D.a=V3

6.(3),yz()

A,yz-3.y=1-zCy=2zD.y=3z+2

7.(3),4BCD,B=70,D=()AD

BC

A,35°B.110°C70°D.130°

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8.(3),4BCD,4BC4D,BBD=150,A

4()

BC

A,150°B.130°C120°D.100°

9.(3)()

A.B.C..

10.(3)A-1,y1)Q(3,)y=(2m-1)z+2,Ay,y,m()

m.7zCc.mz1.m

(3,18)(346,,)

1.(3):V48=.

2.(3),3m,

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