1、 2017 2018 120 90 3 30 1 2. 72 A 108 B 72 C 54 D 36 3. A B C D 4. 3 8 A. 5 7 B. 7 9 C. 7 D. 9 5. ABC DEF AB=DE, B= E, ABC DEF A.BC=EF B. A= D C.AC=DF D. C= F 6. B= D=90 CB=CD 1=30 2= A 30 B. 40 C. 50 D. 60 7. A.1,2,4 B.4,5,9 C.4,6,8 D.5,5,11 8. 70 A 70 B 70 55 C 40 55 D 70 40 9. M 3 2 y A. 3 2 B. 3
2、2 C. 3 2 D. 2 3 10. ABC DEF A=80 E=40 F A. 80 B.40 C. 120 D.60 学校 班级 _ 考号_ 姓名_ 4 24 11. ABC DEF DEF GHI ABC GHI_ ABC DEF DEF GHI ABC GHI_ 12. P -1 2 x P1 13. 4 ABC ADE BAE=120 BAD=40 DAC= 14. 5 AO=OB AOC BOC 15. 6 ABC C 90 AD CAB BC D DE AB E CD 3cm ED 16. 7 ABC AD=DE AB=BE A=92 CED= 7 66 17 8 ABC 3cm 7cm, ABC 18. 8 18cm 1 2 2 4cm, C B A E D A B C D E 19. 8 B E C F AB DE A D AC DF ABC DEF BE CF 20. 10 AE BAC AB=AC D AE ABD ACD 21. 10 , ABC AB=AC=CD BD=AD ABC B A C D E 22. 10 AF=DB BC=FE AC=DE BC EF 23. 12 ABC A B C 1 ABC x A1B1C1 C1 2 ABC y A2B2C2 C2 y x
