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[轉錄][無言] 平行線相交於無窮遠處!?
[ LawBasketbal ]6 留言, 推噓總分: +3
作者: chris83810 - 發表於 2009/06/17 23:28(15年前)
248F→squirrel1085:為什麼說不相交和相交於無窮遠是同一件事呀?06/15 02:22
249F→squirrel1085:那歪斜線不就相交於無窮遠處06/15 02:22
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