三角形面积公式
- 网络Area of triangle
三角形面积公式-
用三角形面积公式先证明推论，再用推论结果去证明定理，定理和推论都得以严格证明，学生易于理解和接受。
To prove the corollary first with the area formula for a triangle , then to prove the theorem with the corollary , it would make both the theorem and corollary proved strictly , so that the students understand and accept it easily .
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这就是空间三角形的面积公式。
That 's the formula we 've seen for the area of a triangle in space .
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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。
The formula for area of triangle on ellipsoid by means of geodesic coordinate is derived in this paper .