Hayes solves the problem of determining whether three points in a plane are collinear.
Hayes解决了如何确定一个平面上的三个点是否在一条直线上的问题。
Orbits of this type can be positioned near collinear libration points, and for simplicity it is adequate to take linear terms into consideration in the control process.
这种类型的轨道可以离共线平动点较近，那么只需要在控制过程中考虑线性项即可，控制条件简单。
Pascal's Theorem points of intersection of opposite sides a hexagon inscribed in a conic are collinear .
帕司卡定理：给定一个圆上的六边形，则此六边形三对对边直线的交点在同一直线上。
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