巴斯加线性质的研究

The Study on Pascal-lines Properties

论证了巴斯加（Ｐａｓｃａｌ）线的两条性质：在巴斯加定理中的６０ 条巴斯加线，每４条交于一点——对边交点；属于同一对边交点的４ 条巴斯加线，分属两个成射影对应关系的同底一维线束。布利安桑点也有类似的性质。

In this paper,two properties of Pascal lines are discussed.The first one is that every four of sixty Pascal lines interect on one point (intersection of two opposite sides).The second one is that four Pascal lines interected on one point belong to two pencils of lines seperately.And the two pencils of lines are perspective colineation,and the Brianchon points have the similar properties.