摘要
给出平面三角形有向面积的一个定理及其若干推论.推广拿破仑三角形的一些已知结论.
In this paper,one theorem of directed areas for plane closed folding counter(Along) Triangles is given,some known results of Napoleon triangles are promoted.
出处
《赣南师范学院学报》
2010年第3期31-34,共4页
Journal of Gannan Teachers' College(Social Science(2))
关键词
平面闭折线
有向面积
拿破仑三角形
plane closed folding
counter(Along) Triangles
Directed area
Napoleon triangle.