AM=MB=AB/2=12/2=6,
MC=2/3MB=2/3*6=4,
AC=AM+MC=6+4=10.
线段AB=12厘米,点M是AB中点,点C在MB上且MC:CB=2:1,求线段AC的长?
线段AB=12厘米,点M是AB中点,点C在MB上且MC:CB=2:1,求线段AC的长?
数学人气:847 ℃时间:2020-04-06 21:45:59
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