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The inscribed square problem (Toeplitz's square peg problem)
Show that every simple closed curve in the plane passes through the four vertices of some square.
PR
PR 把工作从一条路线带到另一条；合并它就是采纳。
新建 PR
Show that every simple closed curve in the plane passes through the four vertices of some square.
PR 把工作从一条路线带到另一条；合并它就是采纳。