兩條直角邊+一條斜邊
total length = 2 + square root of 2
回複:2 start- old- 修柵欄
本帖於 2010-04-08 17:57:06 時間, 由版主 於德利 編輯
兩條直角邊+一條斜邊
total length = 2 + square root of 2
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