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本文提出了另一种利用对极四边形绘制中点曲线的作图方法,以及求出了另一形式的中点曲线方程。并应用提出的作图原理简便地对各种特殊情况时中点曲线的分解进行了推导。文中还提出了一种推导四点共圆条件的简便法。
This paper presents another method for plotting the midpoint curve using polar quadrilaterals and derives another form of midpoint curve equation. The deduction of the midpoint curve in various special cases is deduced by using the proposed mapping principle. The article also proposed a simple method of deriving four-point co-ordination condition.