n.垂心
The method is greatly improved on an old one by calculating traverse error orthocenter, coordinate transformation and separation. 该方法通过求导线误差重心,坐标变换和分离的手段对原方法作了重大的改进,从而使计算变得简单。
Here is a test to check whether a particular program is continuous:Construct the orthocenter of triangle and three mid points (say A', B' C' ) between vertices and orthocenter. 人眼习惯看到动态模糊，因此习惯电视或电影中的运动模糊甚至不会注意到。
This article has studied the definite integral used in the physics application from power,force,moment of inertia,orthocenter of plane figure and calculation of inertia moment,mainly utilizing the research method from particulars to generals. 本文从功、力、转动惯量、平面图形的形心和惯性矩的计算这几个方面研究了定积分在物理学中的应用，主要运用了从特殊推广到一般的研究方法。
Some Results about Median Point of Any Polygon and Orthocenter of Any Inscribed Polygon of a Circle 关于多边形的顶点重心与圆内接多边形的垂心的若干结论
