如图1所示,A、B、C三个村子计划联合挖一口自来水水井,为了节省资金,从水井到各村铺设的自来水地下管道距离之和最短,水井在何处挖? 为了确定水井的位置,村民们七嘴八舌,你一言,我一语,有的说在这儿挖,有的说在那儿挖.就在他们争论不休时,来了一位中学数学教师,他得如此事之后,很快地帮助村民确定了 As shown in Figure 1, the villages A, B, and C plan to jointly dig a tap water well. To save money, the sum of the underground water pipes laid down from the wells to the villages is the shortest, where are the wells dug? To determine the wells In the location, the villagers spoke words, I said something, some said to dig here, and some said to dig there. Just when they argued, came a middle school math teacher. He had to do this. After that, it quickly helped the villagers determine