tangpakchiu 寫到:#ed_op#div#ed_cl#那當為一個鈍角三角形,題目可解嗎???#ed_op#/div#ed_cl#
#ed_op#br#ed_cl#若ABC為鈍角三角形,則跟(1)的情況差不多:#ed_op#br#ed_cl##ed_op#span class="postbody"#ed_cl##ed_op#/span#ed_cl##ed_op#img src="file:///D:/DnS/%A2%D5%A2Iry/%AE%E0%AD%B1/a.GIF" alt=""#ed_cl##ed_op#img src="richedit/upload/2kf919a0fdc8.gif" alt="image file name: 2kf919a0fdc8.gif" border="0"#ed_cl##ed_op#br#ed_cl#只是BC移至比較接近A的地方而已....E、F、G也為同一點....故不可行...#ed_op#br#ed_cl##ed_op#br#ed_cl#
tangpakchiu 寫到:#ed_op#div#ed_cl#對不起....本身的題目沒有提到ABC是否為一鈍or銳角三角形....#ed_op#/div#ed_cl#
#ed_op#br#ed_cl#水落石出了....原來是加了添加劑....:P:P#ed_op#br#ed_cl##ed_op#br#ed_cl##ed_op#br#ed_cl#但原問題本來是甚麼?#ed_op#br#ed_cl#你可以只貼原來的問題嗎?...#ed_op#br#ed_cl#