在一个圆中任取三条互不相交的弦,其中以每两条弦为一组对边,各得到一个凸四边形,设这三个四边形的对角线的交点分别为M,N,P,证明:M,N,P三点共线
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![在一个圆中任取三条互不相交的弦,其中以每两条弦为一组对边,各得到一个凸四边形,设这三个四边形的对角线的交点分别为M,N,P,证明:M,N,P三点共线](/uploads/image/z/8748158-14-8.jpg?t=%E5%9C%A8%E4%B8%80%E4%B8%AA%E5%9C%86%E4%B8%AD%E4%BB%BB%E5%8F%96%E4%B8%89%E6%9D%A1%E4%BA%92%E4%B8%8D%E7%9B%B8%E4%BA%A4%E7%9A%84%E5%BC%A6%2C%E5%85%B6%E4%B8%AD%E4%BB%A5%E6%AF%8F%E4%B8%A4%E6%9D%A1%E5%BC%A6%E4%B8%BA%E4%B8%80%E7%BB%84%E5%AF%B9%E8%BE%B9%2C%E5%90%84%E5%BE%97%E5%88%B0%E4%B8%80%E4%B8%AA%E5%87%B8%E5%9B%9B%E8%BE%B9%E5%BD%A2%2C%E8%AE%BE%E8%BF%99%E4%B8%89%E4%B8%AA%E5%9B%9B%E8%BE%B9%E5%BD%A2%E7%9A%84%E5%AF%B9%E8%A7%92%E7%BA%BF%E7%9A%84%E4%BA%A4%E7%82%B9%E5%88%86%E5%88%AB%E4%B8%BAM%2CN%2CP%2C%E8%AF%81%E6%98%8E%EF%BC%9AM%2CN%2CP%E4%B8%89%E7%82%B9%E5%85%B1%E7%BA%BF)
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