麵積是4，需要證明兩個腰上的點的連線平行於底邊且被底邊中線平分，之後證明兩個三角形的高相等

來源: PCGuy 於 2014-03-18 16:24:19 [舊帖] [給我悄悄話] 本文已被閱讀：次

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