AB:BD=2/3
CD:AC=3/4
if AD=1, then AB=2/5, CD=3/7 and then BC=6/35
know one area and can solve the rest
AB:BD=2/3
CD:AC=3/4
if AD=1, then AB=2/5, CD=3/7 and then BC=6/35
know one area and can solve the rest
• 这也是我的解法,我还有另一解: -万斤油- ♂ (319 bytes) () 12/23/2023 postreply 19:16:08