1、 2016 2017 3 30 1 ( ) A 10cm 20cm 30cm B 20cm 30cm 40cm C 10cm 20cm 40cm D 10cm 40cm 50cm 2 , ( ) A B C D 3 2011 ( ) A 2012 B 2013 C 2014 D 2015 4 144 ( ) A 8 B 9 C 10 D 11 5 50 A.150 B.80 C.50 80 D.70 6 ) A B C D 7 ABD BAC A. D C BAD ABC B BAD ABC ABD BAC C BD AC BAD ABC D AD BC BD AC 8 E B F C EB=
2、CF A= D ABC DEF A.AB=DE B. DF AC C. E= ABC D. AB DE _ :_ _ _ - - - 9 ABC AC=5 AD=7 AB A.1AB29 B.4AB24 C.5AB19 D.9AB19 10. B C E ABC CDE A. ACE BCD B. BGC AFC C. DCG ECF D. ADB CEA 4 16 11. ABC DEF A D B E B= 32 A= 68 AB=13cm F= DE= cm 12 , 1=_. 11 13 6 AE=BF AD BC AD=BC ADF DF= 14 8 1= 2 ABC BAD 1 SAS 2 AAS 3 ASA 54 17 9 A A= 18 9 , D ABC BC ,DF AB F AC E, A=35 , D=42 , ACD . 140 80 1 12 19 9 , B F C E AB DF AC DE AC=DE FC BE . 20 9 AC=DF AD=BE BC=EF. (1) ABC DEF (2) AC DF. 21 9 AB=AC AD=AE 1= 2 ABD ACE. F D C B E A22 9 B D E C ABE ACD. 1 BD=CE 2 ABD ACE.
