Description: Point is in polygon, it is determined whether the two lines intersect, the nearest point on the plane
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计算几何\判定两条直线是否相交\判定两条直线是否相交.cpp
........\平面最近点对\2107.cpp
........\点是否在多边型中\1081.cpp
........\判定两条直线是否相交
........\平面最近点对
........\点是否在多边型中
计算几何