有心圆锥曲线又有一个新的性质,该性质容易使人联想到蝴蝶定理。众所周知,蝴蝶定理作为一类著名的平面几何,想象丰富,蕴理深刻。那么有心圆锥曲线的这一性质能否像蝴蝶定理一样推广到更一般的情形呢?本文将对此作出肯定的回答。 Concentric curves have a new nature, the nature of the butterfly theorem easily reminiscent of. As we all know, butterfly theorem as a class of well-known plane geometry, rich imagination, profound implications. So is the nature of a conic curve generalized like the butterfly theorem to the more general case? This article will give an affirmative answer.