从三角形顶点及与AD交点向BC做3条垂线，利用全等和相似三角形面积和边长关系。

来源: 湖西于 2025-04-25 21:32:11 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.