回複：你可以證明所有的三角形都是等腰三角形嗎？

來源: yaya09 於 2009-02-06 19:10:00 [舊帖] [給我悄悄話] 本文已被閱讀：次

邊角角相等的兩三角並不全等. 如此而已.

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