推 FocusE :EP//DS=>AD:AS=ED:PS06/30 21:07
→ FocusE :ADS~AHD=>AD:AS=AH:AD06/30 21:07
→ FocusE :AH:AD=ED:PS =>AD*ED=AH*PS06/30 21:08
→ FocusE :順帶一題 第4行的2是因為正方形面積2倍 邊長根號2倍06/30 21:09
※ 編輯: danny312664 (110.50.170.99), 06/30/2014 21:10:04
→ FocusE : 提 06/30 21:10
→ danny312664 :感謝F大!!!! 06/30 21:17
→ danny312664 :我有想到相似卻忘記去比線段的比例了 再次感謝!!! 06/30 21:18