(本题满分5分)有两条河流交汇形成一个三角地带,此地域风景宜人,

(本题满分5分)
有两条河流交汇形成一个三角地带,此地域风景宜人,土壤肥沃,小猪想择此地建造房屋P,他想到两条河流距离要相等,并且与两河交汇点的距离需200米。小猪不知道该怎么选择,你能帮助他吗?
(尺规作图,保留作图痕迹)

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