在坐标纸上画20onX轴,用尺找三角形顶点,长13
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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-
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12/07/2012 postreply
06:34:15
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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-
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12/07/2012 postreply
06:42:46
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俺可是花了5分钟才想出的欧。关键是哪个整数有trick。
-bangbang9814-
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12/07/2012 postreply
06:45:04
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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-
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12/07/2012 postreply
06:46:03
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不敢当。这也能google,lol
-bangbang9814-
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12/07/2012 postreply
07:07:36
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You are not allowed to use graph paper, ruler, and compass
-BeLe-
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12/07/2012 postreply
07:16:32
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哈哈,that's why I am an engineer, not a mathematician.
-bangbang9814-
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12/07/2012 postreply
07:58:54
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MATHCOUNTS is organized by engineers!
-BeLe-
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12/07/2012 postreply
08:14:13