与二次曲面有交线圆的平面的特性

The special property of the plane which has a circular section with a quadric

文献[1-2]中已证明了与二次曲面有交线圆平面的存在性及其方程的求法,本文在此基础上,用微分几何中的曲面理论作进一步探讨,得到此类平面的一个特殊性质.

The existence and the solution methods of the equation of the plane which has a circular section with a quadric have been proven in [ 1 ] and [ 2 ]. This article obtains a special property of this kind of planes by using the theory of surface in differential geothetry.