过圆内一定点做两条弦,两条弦与圆的四个交点组成一个四边形。若两弦夹角固定,怎么求四边形面积最值? 知乎 Template




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tomski过圆内一定点做两条弦,两条弦与圆的四个交点组成一个四边形。若两弦夹角固定,怎么求四边形面积最值? 知乎 coloring