Steiner定理是一个著名的几何题,它的证明更是给广大数学爱好者予启发和想象.本文给出Steiner定理的拓广,供大家参考.Steiner定理在△ABC中,∠B和∠C的平分线BD与CE相等,则AB=AC.拓广定理(如图1)在△ABC中,设BD、CE分别为∠ABC和∠ACB的n≥2等分角线中的任意两条相应的分角线段 Steiner theorem is a well-known geometric problem, its proof is to inspire and imagine the majority of mathematics enthusiasts.This article gives the expansion of Steiner’s theorem, for your reference.Steiner theorem in △ ABC, ∠B and ∠C The bisector BD is equal to CE, then AB = AC. Extension Theorem (Figure 1) In ABC, let BD and CE be 两ABC and ∠ACB, respectively, for any two of the n≥2 bisector angles The corner line segment