摘要：
要求:给出x1,y1,x2,y2,x3,y3,x4,y4;有三种情况，（1）相交（2）平行（3）共线。有交点了求出DescriptionProfessor Leyni likes to help LOLIs with their math.This time, Leyni meets several LOLIs in the classroom and gets several problems about "Intersecting Lines".The LOLIs want to know how and where two lines intersect.Leyni 阅读全文