The formula for area of triangle on ellipsoid by means of geodesic coordinate is derived in this paper.

推导出用三顶点的测地坐标计算地球椭球面上三角形面积的公式。

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In this paper, a search method based on the area of triangle and quadrilateral is presented to solve the problem of recognition of abnormal data in trajectory tracking system.

研究弹道跟踪系统的异常数据识别问题，导出了一种基于三角形和四边形面积的异常数据识别的搜索方法。

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That's the formula we've seen for the area of a triangle in space.

这就是空间三角形的面积公式。

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