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关于圆的性质在椭圆中一般不会成立.但在特别条件下,也可能得到保留,通过椭圆性质的探索过程,对问题研究逐渐深化和拓展,有利于激发学习者的兴趣.尤其是合理地运用几何直观去推测,或是出于直觉,或是通过归纳和类比,体现了一种自然思考的过程,从而得到在椭圆中像圆一样有相交弦定理、切割线定理及割线定理等性质成立的条件.
The nature of the circle is generally not established in an ellipse. However, under certain conditions, it may also be preserved. Through the exploration process of the nature of ellipses, the study of problems gradually deepens and expands, which is conducive to stimulating the interest of learners. Especially reasonable. The use of geometric intuition to speculate, or out of intuition, or through induction and analogy, embodies a process of natural thinking, resulting in the nature of intersecting string theorem, cutting line theorem and secant theorem in an ellipse. Established conditions.