这题该怎么做，跪求各位数学学霸解答一下了

1 S△ABD = 1/2 * S△ABC = 6 2 FE' // AD E'为中点 ∴DE' = 1/2 BD = 1/2CD ∴EO = 1/2OC 所以S△AFO = S△BDO = S△CEO = 1/6 S△ABC = 2

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