交点是从什么地方来的呢？它应该不是线段的两个端点吧：）

来源: JSL2023 于 2024-05-16 17:20:04 [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.