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AE=AC/3 那麼:因為三角形ADE和三角形ADC是等高的 所以三角形ADE面積:三角形ADC面積=AE:AC=1:3 同理AD=AB/2;而且三角形ADC和三角形ABC是等高的 所以三角形ADC面積:三角形ABC面積=AD:AB=1:2 所以: 三角形ABC面積=2三角形ADC面積=6三角形ADE面積=24
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