包含了点的基本运算

1. 平面上两点之间距离

2. 判断两点是否重合

3. 矢量叉乘

4. 矢量点乘 2

5. 判断点是否在线段上 2

6. 求一点饶某点旋转后的坐标 2

7. 求矢量夹角 2



㈡ 线段及直线的基本运算

1. 点与线段的关系 3

2. 求点到线段所在直线垂线的垂足

3. 点到线段的最近点

4. 点到线段所在直线的距离

5. 点到折线集的最近距离

6. 判断圆是否在多边形内 5

7. 求矢量夹角余弦 5

8. 求线段之间的夹角 5

9. 判断线段是否相交 6

10.判断线段是否相交但不交在端点处 6

11.求线段所在直线的方程 6

12.求直线的斜率 7

13.求直线的倾斜角

14.求点关于某直线的对称点

15.判断两条直线是否相交及求直线交点

16.判断线段是否相交，如果相交返回交点 -Contains a point of basic computing the distance between two points on a plane 2. Determine whether two points are coincident 3. Vector cross multiplied by 4. Vector dot 25. Judge whether a line segment 26. Seeking a point a little spare rotation coordinates after 27 Find the angle between two vectors (ii) straight line segment and a basic computing. point and the line between 32 Find the point where the straight line to the foot of the perpendicular line 3 Line points to the nearest point 4 points to the straight line distance of 5 points to the recently broken away from six. determine whether the polygon round 57. vector cosine angle 58 Find the angle between the line 59. judge wheth 610 . judge wheth but do not pay at the endpoints 611. seeking the straight line equation 612. linear slope 713. Seeking straight tilt angle of 14 points on a straight-line demand point of symmetry 15. judge two straight lines intersect and find the intersection 16. judge wheth, if the intersection point