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1、, 2016.10.17,12.2.2 (SAS),1,2 SSS,1., . SAS ,S A,2,ABCDEF,ABCDEFSAS,(SAS),F,E,D,C,B,A,:AB,A,B,A,B,C,E,D,ABC,ACD CD=CA, .,ED,DEAB .,BC,E,CE=CB, ,DEC,ABC,CD=CA, ACB=DCE,CE=CB, ABCDEC SSS , AB=DE,SAS,裺,?1. ?2. ?3.,2. AOBDOC,AO=DO() _=_ ( ) BO=CO() AOBDOC , AOB, DOC,SAS,C,A,B,D,O,3,: :AC=AD ,CAB=DAB. :
2、ACB ADB.,A,B,C,D,: ACB ADB ?,3,: AC=AD CAB=DAB. : ACB ADB.,A,B,C,D,: ACB ADB. ? ?,3,: ,AC=AD ,CAB=DAB. : ACB ADB.,A,B,C,D,: ACB ADB. ? ?,4,: ,AC=AD ,CAB=DAB. : ACB ADB.,A,B,C,D,:,ACB ADB,AC = A D () CAB=DAB A B = A B (,ACBADB,SAS, 5.AB =AC AD = AE . ABE ACD.,: ABE ACD ,AB = AC,AE = AD,A = A, ABE ACDSAS.,1._ SAS,2.: .,
