Pascal线上的调和共轭点与对合对应点

HARMONIC CONJUGATE POINTS AND INVOLUTIVE CORRESPONDING POINTS ON PASCAL LINE

本文用综合法论证了Ｐａｓｃａｌ定理由非退化二阶曲线的内接简单六点形退化为四点形时，Ｐａｓｃａｌ线上有调和共轭点偶与对合对应点偶．

The following result is proved by using synthetic method: If a simple in-scribed six-point graph in a non-degenerate quadratic curve degenerates to a quadrangle inPascal theorem. then there exists harmonic conjugate point pairs and involutive correspond-ing point pairs on Pascal Line.