文[1]研究了三角形2号心的性质,本文做进一步探讨.定理1 设 P 为△ABC 所在平面内任一点,P 关于△ABC 的边 BC、CA、AB 的中点 D、E、F 的对称点分别为 A′、B′、C′,则(Ⅰ)AA′、BB′、CC′交于一点; The paper [1] studies the nature of the triangle No. 2 heart, and this article will further explore. Theorem 1 Let P be any point in the plane where △ABC lies, P about the midpoints D, E, F of the edges BC, CA, AB of △ABC. The symmetry points are A’, B’, and C’, respectively, then (I) AA’, BB’, CC’ intersect at one point;