Presented By Presented By Harry Mills / Harry Mills / PRESENTATIONPRO PRESENTATIONPRO 三角形全等的条件(二) 三角形全等的条件(二)Presented By Presented By Harry Mills / Harry Mills / PRESENTATIONPRO PRESENTATIONPRO A B C E F G ABC EFG AB=EF BC=FG AC=EG (SSS) 有三边对应相等的两个三角形全等(简写成 “边边边”或“SSS”) 在ABC和EFG中 回顾与思考Presented By Presented By Harry Mills / Harry Mills / PRESENTATIONPRO PRESENTATIONPRO 探究活动 把两根木条的一端用螺栓固定在一起时,连 接另两端所成的三角形不能惟一确定.这就是 说,如果两个三角形只有两条边对应相等,那么 这两个三角形不一定全等. A B C B 4cm 6cmPresented By Presented By Harry