4.311,- 壺, 1. 2. 3.򵥵, 1 2,303cm,3050,50,30,4cm6cm,6cm,6cm,406080,3cm4cm6cm,3cm,6cm,4cm,6cm,4cm,3cm, 1,? 2 3,? 4 , 1.,1 2. 2,AC=DB,ABCDCB, . 3.3,ABC,AB=AC,ADBC, BAD= .,1 2 3,AB=DC,CAD,ABCDEF SSS,SSS, ABC DEF,AC=DFBC=EFAD=BE,CF,C=F,1:,AB=DC,AC=DB,A=D.,AB=DC( ),AC=DB( ),BC=CB( ),ABCDCB( ),A=D( ),SSS,ABCDCB,2,AC=AD,BC=BD, ABDAC.,AC=AD( ),BC=BD( ),AB=AB( ),ABCABD( ),1=2 ,ABDAC,SSS,ABCABD,3.2AB=CDAD=CB.AC,2,A=C BD ABDCDB AB=CD() AD=CB() BD=DB() ABDCDBSSS A=C(),1 SSS,2,塢 1. A. B. C. D.,D,塢 2.1,AB=AC,BD=CD.B=C?,1,ABDACD AB=AC() BD=CD() AD=AD() ABDACDSSS B=C(),