2023-2024學(xué)年人教版七年級(jí)上冊(cè)數(shù)學(xué)期末求角的度數(shù)解答題訓(xùn)練

2023-2024

1.EMM,Z\BOCft^AOCft8^60°40°,OD^frZAOB,&ZCOD

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2.B￡n:OCZAOB|WO31dh63—^13^,ZAOB=90°,ZAOC:ZAOB=1:3,

$i^BOC#J&%l.

3.jznS,^DZ'AOE-^ZBOES.^J^,ZBOC=40°,S.OE^AZ'AOC,^ZBOE

4.$n?,o,ZDOE=90°.

(1)5^ZBOD=28°,A^AOENZZVZ

(Z'ygOF^ft^AOC,^ZBOD^^,'^mZEOF^ZBOC^]^,

5.MS-O'ZCOD=90°,OE^fr^AOC,OF^

ZBOD,i^ZEOF^S^L.

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6.M,fi,ZCOD=90°,OE^frZAOD.

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(1)ZAOC>;

(2)5gZBOC=140°,ZDOE?.

7.M,OE^frZBOC,OFECD,^ZBOE=13°,

ZAOF^]^.

8.*A,0,Bit—?^±,ZAOC=3ZCOD,OE^ZBOD.

(1)^ZCOD=10°,^ZAOC^mR^.

(2)%ZAOC=a,^.ZCOE^&^L

sJ

0087-^-kJO‘SOV7-&73O709=3037706=8OV7W71

%<f^f3OS7#70c=0007W(Z)

-%^^SOV7#(l)

■%VM8Od7%HO‘%VM(IOV7%:)0799=3007^W’ll

6VW6feu3007^-7:80Vffi‘3007=3007^70

‘■^^3087^7^=3007^7)

'SOTSO^O't?

R■3087Z=3007'7‘^8007^30^‘0'777^00^SV^‘W’01

?WWsz^-zzCz)

^lfMWTZ(T)

7S￡=177001=0037‘OOVZ^-730‘0■?iWGO’6

(l)^ZBOFftjM;

(2)^A0C&WBl.

13.inS,￡OAD±O,&￡OffiWOB,OEWZDOB,OCZAOB,

^ZAOC=27°58'Bt,^ZDOE^^.

14.OHIHlHMhSOC,OD,OE.

(1)^ZAOC:ZCOD:ZDOE:ZEOB=3:7:6:2,JJPJZCOE

(2)^OD^IBM^>OC^^-ZAOD,OE^ZBOD,i^ACOE^]^.

15.M,B^*A>B.C^|W)—BE.BF^^ZABD^ZCBDm

(l)^^EBF^^-,

(2)S?^HlZDBE?

16.?,ZAOC^ZBOD^^Mi.

(2)^ZDOC=30°,itZOftZAOBOE,ZAOEWM.

17.M,OM,ON^'i^^AOC^^BOC^^,B￡nZAOC=100°,ZHOC=36°,

^.ZMONfiWlfc.

18.$n?,O^^ABl.—ZAOC=40°,OD^ftZAOC,ZDOE=90°.

(2W0?fOE&^frZBOC,M0JSS.

19.￡ns,ZMOD=55°,ZCOD=90°,OM^AZAOC.

(2)^fABOP=2ZAOM,ACOPWO.

20.$nS,Z￡>=30°,ZB=45°,4Z

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(1)5gZDCE=42°,^ACB-

(2)5gZACB=125°,

(3)WB^ACBZDCE0JJI.

1.10°

2.120°^60°

3.ZBOE=25°

4.(1)ZAOE=62°

(2)Z￡OF=|zBOC,

5.135°

6.(l)ZAOO

(2)25°

7.56°

8.(1)60°

(2)90°

9.(1)55°

(2)Z2=67.5°,Z3=45°

10.(1)18°

(2)W,SSWtJr

11.(1)130°

(2)90°

12.(1)15°

(2)120°

13.62°2'

14.(1)130'

(2)90'

15.(1)90°

(2)XDBE^^ADBF.ZCBF

16.(l)ZC(9B^ffl+0<JZ4OD^

(2)75°

17