在坐标纸上画20onX轴,用尺找三角形顶点,长13
所有跟帖:
• Sorry,长13距离X轴6.6(以line20的一端为圆点画圆与y=6.6相交),然后量另一条线的长度,取整 -bangbang9814- ♀ (0 bytes) () 12/07/2012 postreply 06:34:15
• 这个好!灰常感谢。俺女儿要葱白我了,哈哈哈 -周游列国逍遥人生- ♂ (0 bytes) () 12/07/2012 postreply 06:42:46
• 俺可是花了5分钟才想出的欧。关键是哪个整数有trick。 -bangbang9814- ♀ (0 bytes) () 12/07/2012 postreply 06:45:04
• 5分钟就出来了,高手。俺昨晚Google了4小时,嘿嘿。 -周游列国逍遥人生- ♂ (0 bytes) () 12/07/2012 postreply 06:46:03
• 不敢当。这也能google,lol -bangbang9814- ♀ (0 bytes) () 12/07/2012 postreply 07:07:36
• You are not allowed to use graph paper, ruler, and compass -BeLe- ♀ (150 bytes) () 12/07/2012 postreply 07:16:32
• 哈哈,that's why I am an engineer, not a mathematician. -bangbang9814- ♀ (78 bytes) () 12/07/2012 postreply 07:58:54
• MATHCOUNTS is organized by engineers! -BeLe- ♀ (159 bytes) () 12/07/2012 postreply 08:14:13